ISO 10422:1993

INTERNATIONAL
STANDARD
First edition
1993-08-o 1
Petroleum and natural gas industries - Threading,
gauging, and thread inspection of casing, tubing
and line pipe threads - Specification
Industries du p&o/e et du gaz nature/ - Fjletage, calibrage et inspection des
filetages des tubes de cuvelage, des tubes de production et de conduites -
Spkcifica tions
Reference number
IS0 10422:1993(E)
IS0 10422:1993(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 technical committees. Each member
body interested in a subject for which a technical committee has been established
has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work.
IS0 collaborates closely with the International Electrotechnical Commission (IEC) on
all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for voting. Publication as an International Standard requires
approval by at least 75 % of the member bodies casting a vote.
International Standard IS0 10422 was prepared by the American Petroleum Institute
(API) (as STD 5B, 13th ed.) and was adopted, under a special “fast-track procedure”,
by Technical Committee lSO/TC 67, Materiak and equipment for petroleum and
natural gas industries, in parallel with its approval by the IS0 member bodies.
0 IS0 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in
writing from the publisher.
International Organization for Standardization
l CH-1211 land
Case postale 56 Geneve 20 l Switzer
Printed in Switzerland
ii
IS0 10422:1993(E)
Introduction
International Standard IS0 10422:1993 reproduces the content of API STD 5B, 13th
edition, 1988. ISO, in endorsing this API document, recognizes that in certain
respects the latter does not comply with all current IS0 rules on the presentation and
content of an International Standard. Therefore, the relevant technical body, within
ISOFC 67, will review IS0 10422:1993 and reissue it, when practicable, in a form
complying with these rules.
This International Standard is not intended to obviate the need for sound engineering
judgement as to when and where this International Standard should be utilized and
users should be aware that additional or differing requirements may be needed to
meet the needs for the particular service intended.
Standards referenced herein may be replaced by other international or national
standards that can be shown to meet or exceed the requirements of the referenced
standards.
Appendix A t :o this documen t should not be considered as requirements. It is
included only as guidelines.
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INTERNATIONAL STANDARD
IS0 10422:1993(E)
Petroleum and natural gas industries - Threading,
gauging, and thread inspection of casing, tubing and line
pipe threads - Specification
1 Scope
This International Standard specifies dimensional requirements on thread and thread gauges, and coversthe instruments
and methods for the inspection of threads for line pipe, casing and tubing,
Requirements
Requirements are specified in:
“API Specification STD 5B (STD 5B), Thirteenth Edition, May 31, 1988, Specification for Threading, Gaging, and Thread
Inspection of Casing, Tubing and Line Pipe Threads”,
which is adopted as IS0 10422.
For the purposes of international standardization, however, modifications shall apply to specific clauses and paragraphs
of API STD 5B. These modifications are outlined below.
NOTE - A wavy line in the margin indicates the location of a modification to the text of the API publication.
Page 2
TABLE OF CONTENTS
Delete Appendix C.
Page 3
Information given in the POLICY statement is relevant to the API publication only.
Page 4
Information given in the FOREWORD is relevant to the API publication only.
Page 5
Subclause 1.6 Metric conversions
The factors used for converting the pound (lb) and the pound per square inch (psi) shall be replaced as follows:
1 pound (lb) = 0,453 529 37 kg (exactly)
1 pound per square inch (lb/in2) = 0,070 37 kg/cm2
Referenced standards, item c
Subclause 1.7
This part is information which is relevant to the API publication only.
TABLE I .O, REFERENCED STANDARDS
The equivalent International Standard to API RP 5Cl is IS0 10405:1993, Petroleum and naturalgas industries - Care and
use of casing and tubing.
The provisions of API Spec Ql (Quality program) do not apply in the framework of this International Standard.
Page 6
SECTION 2, THREAD DIMENSIONS AND TOLERANCES
Subclause 2.3
First paragraph, last three lines shall read:
II
Care and use of casing and tubing.”
. . . of IS0 10405: 1993, Petroleum and natural gas industries -
IS0 10422:1993(E)
Second paragraph, first sentence: Introduce the metric values as follows:
“A 3/8 in (9,5 mm) high equilateral triangle die stamp shall be placed at a distance of L, + l/16 in [L&mm) + 1,6 mm] from
each end of 16 in (406,4 mm), 18 s/sin (473,075 mm) and 20 in (508 mm) 8-round thread casing in grades H40, J55 and K55.”
Subclause 2.4, NOTE
Add “(mm)” in the definition of t, and D, after “in inches,‘.
Page 7
Subclause 2.5
1st line shall read: “The angle 65’ of the outside chamfer.”
Subclause 2.6
9th line shall read: “The threads in steel couplings for line pipe nominal diameter 2 in (50’8 mm) and larger.“;
13th line: Replace “which will minimize’ by “so as to minimize”;
4th line from bottom: The number in parentheses shall be “(0,152 mm)“.
Subclause 2.8
2nd line: Add “(25’4 mm)” after “inch”.
In the NOTE, the first two lines shall read:
“For line pipe threads finer than 7 7 112 threads per in (7 7 IQ threads per 25,4 mm or 0,453 threads/mm), [pipe size smaller
than 7 in (25,4 mm) nominal diameter], only.”
Subclause 2.9
5th line shall read: “pipe couplings nominal diameter 6 in (152,4 mm) and larger.”
7th line: The number in parentheses shall read: “(19 mm per 6 100 mm)“.
9th to 11th line: Delete the sentence starting “Maximum misalignment” and ending “difficulties”.
Page 8
Subclause 2.11
Add the following sentence:
“The criteria for rejection by the purchaser shall be some demonstration that axial misalignment exceeds 0,031 in
(0’79 mm), or the angular misalignment exceeds 3/4 in per 20 ft (19 mm per 6 100 mm) of projected axis, or by a check
of whether the minimum length of full crest threads (LC) is present.”
Subclause 2.13
Add the following subclause:
“2.13 A hand tight connection is defined as a threaded connection that has been made up by hand without the aid of
excessive force. Hand tight standoff “A” is the maximum theoretical make up position of two nominal parts which can
be achieved without incurring interference.”
Page 75
Subclause 3.1
Replace the existing subclause with the following text:
“All threads covered by this section shall comply with the gauging practice requirements specified herein. Accordingly,
any manufacturer who produces products utilizing any of the threads covered by this specification shall have access to
master gauges for each size and type of thread produced. Master gauges consist of a plug and mating ring conforming
to the requirements of Section 4, and certified as required in Section 5.”
NOTE 2
Add the following to the end of the NOTE:
“Good care is as indicated in paragraph 3.2 and paragraph 5.4.”
IS0 10422:1993(E)
NOTE 3
Delete this note.
NOTE 4
Renumber as NOTE 3.
2nd line: Add “(340 mm)” after “13 318 in”.
6th line: Add “(406 mm),, after “16 in,,.
Subclause 3.2
Replace the existing clause with the following text:
“The manufacturer of product threads shall also provide working gauges conforming to the requirements of paragraph 4.2
for use in gauging the product threads, and shall maintain all working gauges in such condition as to ensure that product
threads, gauged as required herein, are acceptable under this specification. The manufacturer shall establish and
document a frequency for determining interchange standoff of working gauges with master gauges, and for inspecting
product threads with working gauges based on his control of the manufacturing process.”
Subclause 3.4
Renumber the present NOTE as “NOTE 1:“.
Add a new NOTE 2 as follows:
“NOTE 2: “p “ is defined as the distance from a point on a nominal thread form to a corresponding point on the next thread,
measured parallel to the axis. This value can be calculated by dividing one inch (25,4 mm) by the number of threads per
inch (threads per mm) as indicated in Tables 2.7 through 2.7 to three significant figures.”
Subclause 3.5
Delete the last four lines from the bottom: “The API monogram. have been met.”
Page 77
Subclause 3.6, item a
6th line: The text in parentheses shall read: “(per inch or per 254 mm)“.
9th line onwards shall read:
“pipe nominal diameter 8 in (203’2 mm) and smaller, and 1/5thread turn for8-thread gauges for line pipe nominal diameter
10 in (254 mm) and larger.”
Subclause 3.6, item b
7th line onwards shall read:
“for sizes 8 518 in (219’1 mm) and smaller, l/5 thread turn for sizes 9 518 in (244’5 mm) and larger, and l/5 thread turn for
all IO-thread gauges.”
Subclause 3.6, item c
Last two lines shall read:
“turn for sizes 8 518 in (219’1 mm) and smaller, and l/8 thread turn for sizes 9 518 in (244’5 mm) and larger.”
Subclause 3.9
9th line: Replace the sentence starting “Other gage dimension.” up to ‘I. reference plane.” with the following text:
uge dimensions which affect how the gauges may be used ‘were notch anged; th erefore, g auges made prior to
“Other ga
1940 may be used, provided pro per ad justment in stan doff val ues a re made for the shift in referen ce plane.”
Page 78
Right-hand column
2nd line: Delete the period after “mm” in the parentheses and add “(340 mm)” after ” 73 3~“.
3rd line: Add “(406,4 mm)” after ,, 76 in”.

IS0 10422:1993(E)
4th and 5th lines: The numbers in parentheses shall be “(E, - 0,083 3 L, + 1’57 mm).”
Item b, 3rd line from bottom onwards shall read:
“0 for sizes 13318 in (340 mm) and smaller, and is equal to the nominal pipe diameter for sizes 76 in (406,4 mm) and larger.”
Item e, 3rd and 4th lines shall read:
I’ 73 3~ in (340 mm) and smaller; for 76 in (406,4 mm) and larger, g is 7.488 in (37,8 mm).”
Item g, 3rd and 4th lines shall read:
“plus 0.076 in (0,47 mm) for sizes 73 318 in (340 mm) and smaller; for 76 in (406,4 mm) and larger 0, is equal to.”
Item j, second line shall read:
“for sizes 73 3~ in (340 mm) and smaller; crests and roots”
Item j, 3rd line: Add “(406,4 mm)” after ” 76 in”.
Page 79
Subclause 4.8
4th line from bottom: Delete the words “and a gaging notch,,; add a period after “gages”.
Last two lines: Delete the sentence: “The overall. L, -ST
Subclause 4.9
Third and fifth lines: Add “(219 mm)” after “8 ~8”.
Item a (table): Metric dimensions shall be introduced as follows:
Size Plate diameter Bolt circle
in mm in mm in mm
9 518 244,5 7 l/4 184,2
9 518 244,5
10 254
10 3t4 273 9 3/8 244,5
10 314 273
11 314 298,5
12 304,8
13 318 340 10 314
13 318 340 273
14 355,6
16 406,4 12 318
16 406,4 314,3
18 457,2 16
18 457,2 406,4
18 518 473
20 508 17 318
20 508 441,3
IS0 10422:1993(E)
Page 20
Subclause 4.9
Item b (table): Metric dimensions shall be introduced as follows:
Plate diameter Bolt circle
Size
in mm in mm in mm
5 127 7 177,8 4 101'6
5 l/2 139,7
6 518 203,2 5 l/4 133'1
168,3 8
7 177,8
7 l/2 190,5
8 518 215,9
9 l/2 241,3 7 l/2
9 518 244,5 190,5
10 314 273
Subclause 4.11
Delete the last sentence starting: “Unless otherwise stated.”
Item a, Spec 5B*: Delete this item, then rename existing items “b” to “e” as ‘a” to “d”.
Footnote shall be deleted.
Page 25
Figures 4.6 to 4.7
Metric dimensions shall be added as follows:
5/8” (16 mm) Holes, 4 places
l/2" (12'7 mm)
6" (152'4 mm)
2" (51 mm)
Moreover, the two tables containing the dimensions of the plate diameter (A) and of the bolt circle (B), in relation to the
size in inches, may be completed with the metric dimensions given in subclause 4.9.
Page 27
Table 4.10
PLUG GAGE: Change the tolerance concerning “Crest truncation” as follows:
Crest truncation . . . . . . . . . . . . . . . . . . . . . + o-oo4o
- 0.0000
RING GAGE: Change the tolerance concerning “Crest truncation” as follows:
Crest truncation . . . . . . . . . . . . . . . . . . . . . + 0.0°40
- 0.0000
Table 4.11
PLUG GAGE: Major Diameter D : Add “Specified size” before
5 1/2 thru 7 in
7 5/8 thru 13 3/8 in
16 in and larger
Page 28
Subclause 5.1
5th line: Delete the symbol “t”.
After the 3rd address “Rome, Italy”, add the following agency:
“National Institute of Metrology,
Beijing, People’s Republic of China.”

IS0 10422:1993(E)
Replace “National Bureau of Standards” by:
“National Institute of Standards and Technology,
Gaithersburg, Maryland, USA.”
Replace “National Research Laboratory” by:
“National Research Metrology Laboratory,
Ibaraki, Japan.”
4th line from bottom: Add: “(219,l mm)” after 8 518 in
2nd line from bottom: Add before “Physikalisch-.‘I:
“Oil Country Tubular Goods Inspection Laboratory,
China National Oil and Gas Exploration & Development Corporation,
People’s Republic of China.”
Subclause 5.2
12th line and 17th line: Delete the words “with copy to the API Dallas office”.
End of subclause: Add the following text:
“Master gauges and certificates of compliance may be transferred. If a certificate is not available, the gauges shall be
recertified and a new certificate issued by an agency listed in par. 5.1."
Subclause 5.3
NOTE: Add “(406,4 mm)” after ” 76 in”.
Delete the footnote identified with t.
Subclause 5.5
Item*d to be deleted.
Page 29
Subclause 6.4
9th’line: Add “(12,7 mm)” after “l/2 in”
10th line: Add “(219,l mm)” after “8 ~8 in”.
llth line: Add “(273 mm)” after “10 314 in” and “(25’4 mm)” after “1 in”.
18th line: Add “11 112 threads per 25’4 mm or 0,453 threads/mm)“.
First NOTE, 3rd and 4th lines: The sentence shall read:
” Thus, the phrase “number of turns per inch (per mm) ‘, means per inch of thread axis.”
Second NOTE, 3rd and 4th lines: Add “(75,9 mm)” after “0.625 inches”, and “(72,7 mm)” after “0.500 inches”.
Thefirst NOTE shall be numbered “NOTE I” and the second “NOTE 2”.
Page 30
Figure 6.3
2nd and 3rd lines of the caption shall read:
“THREADS IN SIZES 4 in (lOI, mm) NOMINAL DIAMETER
(4 112 in (I 14’3 mm) - OD] AND LARGER”
Page 37
Subheading above subclause
This shall be modified to:
“Internal Threads in Sizes 4 in (101,S mm) Nominal Diameter [4 1/2 in (114,3 mm) - OD] and Larger”

IS0 10422:1993(E)
Subclause 6.10
2nd line: Make the same changes as above.
Subclause 6.11, right-hand column
5th line shall read: “is the fourth crest on sizes 5 in (127 mm) through 7 51x1 in (155 mm), and.”
7th line: Add “(219 mm)” after “8 s/s in”.
8th line: Add “(273 mm)” after “10 314 in”.
16th line: Add “( 127 mm)” after “5 in”, and “( 155 mm)” after “7 WI in”.
18th line: Add “(219 mm)” after “8 51s in”, and “(273 mm)” after “10 3/4 in”.
Subheading above subclause 6.12
This shall be modified to:
“Internal Threads in Sizes Smaller than 4 in (101,6 mm) Nominal Diameter [4 112 in (114,3 mm) - OD]”
Subclause 6.12
2nd line shall read: “sizes smaller than nominal diameter 4 in (lOl,S mm) [4 112 in (114’3 mm) - OD] shall.,,
Page 32
Subclause 6.14
6th line: Add “(406,4 mm)” after “16 in”.
Subclause 6.15
3rd line shall read: “make up triangle A, + 0.375 in (A, + 9’5 mm). The thread must be a.“.
Last line shall read: “dial reads + 0.005 in (+ Of13 mm) or less, . .‘I.
Subclause 6.16
8th line: The value in parentheses shall read “(25’4 mm),,.
Table following subclause 6.17
Heading of first column: Add “(25’4 mm)” after “per inch”.
Fourth column, values in mm: The decimal marker shall be a comma.
Figure 6.6, Detail A
The caption shall read: ‘I. internal threads in sizes 4 in (101’6 mm) nominal diameter [4 1/2 in (114’3 mm) -OD] and larger,,
Figure 6.6, Detail B
The caption shall read: ‘I. than 4 in (101’6 mm) nominal diameter (4 112 in (114’3 mm) - OD]”
Page 33
Subclause 6.18
2nd line shall read: “and of internal threads in sizes 4 in (101’6 mm) nominal diameter (4 1/2 in (114’3 mm) - ODIN.
5th and 6th lines shall read: ‘I. smaller than 4 in (101’6 mm) nominal diameter [4 112 in (114’3 mm) - 00)“.
3rd line from bottom: The text in parentheses shall read: “(k 0,003 mm)“.
Last line: The text in parentheses shall read: “(k 0,005 mm)“.
Figure 6.7, Detail A
The caption shall read:
‘le. THREADS IN SIZES 3 in (76,2 mm) NOMINAL DIAMETER [3 1/2 in (89 mm) - OD] AND LARGER”

IS0 10422: 1993[E)
Figure 6.7, Detail B
Add to the caption: “(406,4 mm)” after “16 in”.
Page 34
Figure 6.8
The caption shall read:
“. 3 in (76,2 mm) NOMINAL DIAMETER [3 112 in (89 mm) - OD]”
Subclause 6.22
2nd line: Add “(127 mm)” after “5 in” and “(193,7 mm)” after “7 WI in,,.
5th line: Add “(219 mm)” after “8 51s in” and “(273 mm)” after “10 3/4 in”.
8th line: Add at end “(2’29 mm)” after “0.090 in”.
Subclause 6.23 (left-hand column)
7th line: Add “(406’4 mm)” after “16 in”.
Last line (before the table) shall read: “within a tolerance of + 0.000 2 in (rt 0,005 mm).,,
27th and 28th lines: The same correction applies.
Last line of first table: Add “(340 mm)” after “13 318 in”.
5th line from bottom: Add “(406,4 mm)” after “16 in”.
Right-hand column
4th line shall read: ‘Sizes 5 in (127 mm) to 7 518 in (1937 mm)“.
13th line shall read: “Sizes 8 518 in (219 mm) through 10 3/4 in (273 mm)“.
Subclause 6.24
14th line shall read: “tolerance of it 0.0005 in (+ 0,013 mm). . .‘I
18th line shall read: “than 3 in (76’2 mm) nominal diameter. . .I’
22nd line: Add “(340 mm)” after “13 ~8 in”.
29th line and 32nd lines: Add “(406,4 mm)” after “16 in”.
Page 35
Subclause 6.25
First two lines shall read:
“External Threads and Internal Threads in Sizes 3 in (76,2 mm) Nominal Diameter [3 1/2 in (89 mm) - OD] and Larger.”
5th line shall read: “in sizes 3 in (76’2 mm) nominal ‘diameter and larger. The tip of the”
Subclause 6.26
First two lines shall read:
Internal Threads in Sizes Smaller than 3 in (76,2 mm) Nominal Diameter 13 1/2 in (89 mm ) - OD]. The gauge illustrated”.
smaller than 3 in (76’2 mm) nominal diameter.”
4th line shall read: ‘I.
Subclause 6.28
8th line shall read: “0.100 in (2’54 mm)“.
9th line: The number in parentheses shall read “(0,762 mm)“.

IS0 10422:1993(E)
Page 36
Subclause 6.30, item b
11th line shall read: “(lOI, mm) nominal diameter (4 1/2 in (114’3 mm) - OD] and larger, and at least.,,
13th line: Insert “(101,6 mm),, after “4 in,,.
14th line shall read: “(4 112 in (114’3 mm) - ODI.”
Subclause 6.30, item c
13th line shall read: “in the range from 260 OF to 266 “F (127 “C to 130 “C) and”.
Subclause 6.30, item d
4th line: Delete the dot after the symbol “g” for gram (28’3 g). Substitute “cm3” for “c.c.” (28’6 cm3 or 0,028 6 I)
6th line: Delete the dot after the symbol “g” for gram (40 g).
Page 37
Subclause 6.34
3rd line from top: The number in the first parentheses shall be “(2,21 mm)“. The number in the second parentheses shall
be “(0,584 mm)“.
Subclause 6.35
8th line: The number in parentheses shall be ‘I(> Of08 mm)“.
11th line: The number in parentheses shall be “(k Of03 mm)‘,.
Subclause 6.35, right-hand column
The first six lines shall read:
+o +o
“number two and three dials, sizes 75/8 in (1937 mm) and smaller, - 0.003 in ( -0,os mm),
+o +o
sizes over 7 518 in, - 0.005 in ( - 0,13 mm). When using the gauge:‘cC” illustrated in figure 6.13, thetolerancesfrom zero setting
+o
+o +o
are -0.003 in ( -0,08 mm) for sizes 7 518 in and Smaller, and - 0.005 ( - 0,13 mm) for sizes over 7 518 in.”
Subclause 6.36
8th line: The number in parentheses shall be ‘I(> Of08 mm)“.
10th line: The sentence shall read:
“The tolerances from zero setting are, number or dial, _ + 0.001 in (2 Of03 mm), number two and three dials, from - 0.001 in
(- Of03 mm) to - 0.004 in (- Of10 mm).”
Last two lines shall read: ‘I. from zero setting are - 0.001 in (- Of03 mm) to - 0.004 in (- Of10 mm) for all sizes.”
Page 38
Subclause 6.38, right-hand column
4th line: The number in parentheses shall be “(2’54 mm),‘.
5th line: The number in parentheses shall be “(0,762 mm)“.
Page 40
Figure 6.18
The caption shall read:
‘I. IN SIZES 4 in (101,6 mm) NOMINAL DIAMETER [4 112 in (114,3 mm) - OD] AND LARGER”
Page 47
Figure 6.19
The caption shall read:
‘I. THAN 4 in (101,6 mm) NOMINAL DIAMETER [4 112 in (114,3 mm) - OD]”

IS0 10422:1993(E)
Page 42
Figure 6.20
The caption shall read:
“. THREADS IN SIZES 4 in (101,6 mm) NOMINAL DIAMETER [4 1/2 in (114,3 mm) - OD] AND LARGER”
Figure 6.21
The caption shall read:
“. SMALLER THAN 4 in (101,6 mm) NOMINAL DIAMETER [4 112 in (114,3 mm) - OD]”
Page 43
Figure 6.22
The caption shall read:
‘I. THREADS IN SIZES 3 in (76,2 mm) NOMINAL DIAMETER [3 1/2 in (89 mm) - OD] AND LARGER,’
Page 44
Figure 6.23
The caption shall read:
“. SMALLER THAN 3 in (76,2 mm) NOMINAL DIAMETER [3 1/2 in (89 mm) - OD],’
Page 46
Subclause 7.6
2nd line: Delete the reference to “API”.
Page 57
Table 7.3, left-hand column
9th line shall read: “Sizes 5 in (127 mm) through 7 5/s in (193’7 mm)“.
15th line shall read: “Sizes 8 51s in (219 mm) through IO 314 in (273 mm)“.
Table 7.3, right-hand column
4th line of NOTE: The number in parentheses shall be “(2 0,03 mm)“.
Paragraph entitled “Seal,,, 3rd line: The number in parentheses shall be (2 5’21 mm per metre).
6th line: The number in parentheses shall be “(292’1 mm + 6’35 mm)“.
Page 56
Subclause 7.7
4th line: Delete the reference to “API”.
Subclause 7.9
7th line: The number in parentheses shall be “(2 0,038 mm)“.
9th line: The number in parentheses shall be “(k 0’05 mm)“.
Right-hand column
Delete the last sentence of 7.9 starting from “The API monogram” up to and including “have been met.”
Subclause 7.10
8th line: The number in parentheses shall be ‘I(- Of30 mm)“.
9th line: The number in parentheses shall be ‘I(- Of25 mm)“.
IS0 10422:1993(E)
Page 58
Subclause 7.11
Replace the existing text with the following:
“Grand Master PlugGauges.Thegrand master plug gaugescomplywith thesame limitationsand tolerancesas prescribed
herein for the reference master plug gauges. Grand master plug gauges for all sizes of extreme-line casing are deposited
with the National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, USA.,,
Subclause 7.12, item j
The last two lines shall read: ” 7.000 in (25,4 mm). See detail B: m = b - 7.000 in (b - 25,4 mm).”
Subclause 7.15
13th line: The number in parentheses shall be “(A Of03 mm)“.
EXAMPLE, 2nd line: Add “(139,7 mm),, after “5 1/2 in”.
5th line from bottom: The number in parentheses shall be ‘I(- 0,008 mm)“.
Page 59
Subclause 7.15, paragraph (a)
4th line from top: The number in parentheses shall be ‘I(- 0,008 mm)“.
8th line: The number in parentheses shall be ‘I(- 0,028 mm)“.
10th line: Delete “or” in the parentheses “(8,143 mm)“.
16th line: The numbers in parentheses shall be “(8,151 mm + 0,038 mm)“.
Last but one line: The numbers in parentheses shall be “(8,171 mm of: 0,038 mm)“.
Subclause 7.15, paragraph (b)
7th line: The number in parentheses shall be ‘I(+ 0,046 mm)“.
9th line: Delete “or” in the parentheses
12th line: The number in parentheses shall be “(38,l mm)“.
15th line: The number in parentheses shall be ‘I(. 0,046 mm)“.
19th line: The number in parentheses shall be “(2 0,015 mm)“.
21st and 22nd lines: Delete “or” in the parentheses.
25th line: The number in parentheses shall be “(63’5 mm)“.
27th line: The numbers in parentheses shall be “(63,515 mm 2 0,051 mm)“.
Last line: The numbers in parentheses shall be “(3,653 mm + 0,051 mm)“.
Subclause 7.21, item a
Delete this item, then rename items “b” to “f” as “a” to “e”.
Page 63
Figure 7.8
Caption shall read:
“GAUGE DETAILS - SIZES 5 in (127 mm) THROUGH 7 518 in (193,7 mm)”
Last line below the caption: Add “(193,7 mm)” atier “7 ~8 in”.
Figure 7.9
Caption shall read:
“GAUGE DETAILS - SIZES 8 518 in (219 mm) THROUGH 10 314 in (273 mm)”
IS0 10422:1993(E)
Last line below the caption: Add “(219 mm)” after “8518 in”.
Page 64
Figure 7.10
Caption shall read:
“GAUGE THREAD FORM - SIZES 5 in (127 mm) THROUGH 7 5/8 in (193,7 mm)”
Page 65
Figure 7.11
Caption shall read:
“GAUGE THREAD FORM - SIZES 8 518 in (219 mm) THROUGH 10 3/4 in (273 mm)”
Page 66
Subclause 7.22
5th and 6th lines shall read:
“.0 of the agencies listed in paragraph 5.1 however, the ring gauge must be sent to the National Institute of Standards and
Technology.”
Delete the list of laboratories given in 7.22, starting with “Laboratoire National d’Essais, Paris, France” up to and including
“Braunschweig, Germany”.
Subclause 7.23
12th line: Add “(IS0 10422:1993)” after “API Std 58”.
Third paragraph, 2nd line: Substitute “Institute of Standards and Technology” for “Bureau of Standards”.
Fourth paragraph: Delete this from “Copies of all.” up to and including ‘I. Dallas Office.”
Subclause 7.25
Fourth paragraph, 2nd and 3rd lines: Add “(yyy mm)” after “.xxx in”.
Page 67
Subclause 8.1
3rd and 5th lines: Substitute “IS0 10422:1993” for “API Std 5B” and for “Spec 5B”.
6th line up to the 13th line: Delete the text starting “The thread marking may be applied.” up to and including ‘I. may
be omitted.”
Subclause 8.2
1st and 4th lines: Substitute “IS0 10422:1993” for “Spec 5B” and for “API Std 5B”.
4th line: Put a period after “IS0 10422:1993”. Delete the remaining part of 8.1 as well as the footnote starting “*Users of
this specification.“.
Appendix A, paragraph A.5
Delete the fisrt and the second sentences so that A.5 reads as follows:
“Shipment should preferably be by a fast system of transit. Owners should prescribe to the custodian the preferable
method of transit for return of gauges.”
Paragraphs A.7, A.8 and A.10 shall be deleted.
Page 69
Metric table 2.2
Heading of column 3: Substitute “Linear density” for “Nominal Weight”.
Footnote, 1st line, shall read:
“*Lc = L, - 28,575 mm (L, - 1,125 in) for 8 round thread casing.”
IS0 10422:1993(E)
Metric table 2.3
Footnote, 1st line, shall read:
,‘*Lc = L, - 28,575 mm (L, - 1,125 in) for 8 round thread casing.”
Page 70
Metric table 2.4
NOTE (I), 2nd line: Add “(340 mm)” after “13 318 in”.
NOTE (I), 3rd line: Add “(406,4 mm)” after “16 in”.
Footnote identified by an asterisk: The first sentence shall read:
“*Lc = L, - IO,16 mm (L, - 0.400 in) for buttress thread casing.,,
Page 77
Figure 2.5
Caption, last line, shall read: “For all sizes 4 1/2 in (114,3 mm) through 13 318 in (340 mm)“.
Figure 2.6
Caption, last line, shall read: “For sizes 16 in (406,4 mm) and larger”.
Page 72
Metric table 2.5
Footnote identified by an asterisk shall read:
- 0.900 in) for 10 thread tubing. Lc = L, - 25,4 mm (L, - 1.000 in) for 8 thread tubing.”
“*Lc = L, - 22,86 mm (L,
Metric table 2.6
Same amendment as above.
Page 73
Metric table 2.6a
Same amendment as for TABLE 2.5 (page 72).
Metric table 2.7
The footnote identified by an asterisk shall read:
“*Lc = L, - 22,86 mm (L, - 0.900 in) for 10 thread tubing.‘,
Metric table 2.8
Heading of columns 2 to 6: Substitute “25,4 mm (1 in)” for “Inch”.
Metric table 2.9
Heading of columns 2 and 3: Substitute “25,4 mm (I in)” for “Inch”.
Page 74
Metric table 2.10
Substitute the symbol I”” for “deg.” (3 places).
Footnote 4: Amend to read “smaller than 25,4 mm (1 in)“.
IS0 10422:1993(E)
Metric table 2.11
Under the heading “Lead” amend to read as follows:
” Lead:*
Per 25,4 mm (1 in)
340 mm (13 318 in) and smaller . . . . . . . . + 0,051 mm
406,4 mm (16 in) and larger . . . . . . . . . . . . . f 0,076 mm
Cumulative 2 0,102 mm”
Footnote 2: The first sentence shall read:
“The lead tolerance (1 in) isthe maximum allo e error in any unit length of 25,4 mm (1 in) within the perfect
per 25,4
threa d length.”
Substitute the symbol “O” for “deg.” (3 places).
Page 76
Metric table 4.1
3rd line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C,” and add “except as otherwise indicated.
See figure 4.1.”
Footnote: Amend to read ‘I. for sizes 335,6 mm (14 in) through 508 mm (20 in).”
Metric table 4.2
3rd line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C, .?
Page 77
Metric table 4.3
3rd line of~the heading: Amend the symbol for degrees Celsius to read “at 20 “C,” and add “except as otherwise indicated.
See figurle 4.1.”
The two lines below the table shall be amended to read:
“Included taper on diameter: Sizes 340 mm (13 3/8 in) and smaller - . . .
Sizes 406,4 mm (16 in) and larger - . .‘I
Metric table 4.4
3rd line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C, . . . .
Page 78
Metric table 4.5
3rd line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C, . .‘I
Metric table 4.6
Same amendment as for table 4.5.
NOTE below table 4.6 shall be amended as follows:
first paragraph, 1st line:
‘I The 33,4 mm (7.375 in), 42,2 mm (7.660 in) and 48,3 mm (7.900 in) integral-joint tubing gauges.”
second paragraph, 1st line:
“The 52,4 mm (2.063 in) integral-joint tubing gauges are identical to the 48,3 mm (7.900 in) external-upset tubing
gauges.”
third paragraph, kt line:
” The 26,7 mm (7.050 in) external-upset tubing gauges, the 33,4 mm (7.375 in) non-upset tubing gauges, and the 33,4
mm (7.375 in) integral-joint tubing gauges. It
IS0 10422:1993(E)
Page 79
Metric table 4.7
3rd line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C.”
Headings of columns 2 to 6: Substitute “25‘4 mm (1 in)“ for “Inch”.
Metric table 4.8
3rd line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C.”
Headings of columns 2 and 3: Substitute “25,4 mm (1 in)” for “Inch”.
Metric figure 4.4
“TAPER = 62‘5 mm per metre (3/4 in per ft) on diameter.,,
Text above the caption shall read:
“For sizes 114‘3 mm (4 112 in) through 340 mm (13 318 in).”
Caption, 3rd line, shall read:
Metric figure 4.5
“TAPER = 83‘3 mm per metre (1 in per ft) on diameter.”
Text above the caption shall read:
“For sizes 406,4 mm (16 in) and larger.”
Caption, 3rd line, shall read:
Page 80
Metric table 4.9
3rd line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C, . .“
Page 87
Metric table 4.10
4th line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C, . .‘I
“PLUG GAGE”: Change the tolerance concerning “crest truncation”, as follows:
Crest truncation . . . . . . . . +OJo2
-0
“RING GAGE”: Change the tolerance concerning “crest truncation”, as follows:
Crest truncation . . . . . . . . +OJo2
-0
Footnote identified by ***, 2nd line: The numerical value shall read: “, 0,635 mm”.
Metric table 4.11
3rd line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C.”
“PLUG GAGE”, Major Diameter, D,: Amend to read:
. . . . . . . . . . . . . . . . . . . . . . . . . . .
“Specified size 139‘7 mm (5 1/2 in) through 177,8 mm (7 in)
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Specified size 155 mm (7 518 in) through 340 mm (13 318 in)
Specified size 406‘4 mm (16 in) and larger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TTaper, 340 mm (13 318 in) and smaller
II
,.~.~.
406‘4 mm (16 in) and larger
*Diameter of collar: Amend to read:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .~.
“Dq, 340 mm (13 318 in) and smaller
II
406‘4 mm (16 in) and larger . . . . . . . . . . . . . . . . . . . . .~.
“RING GAGE”: 1st two lines shall read:
“TTaper, 340 mm (13 318 in) and smaller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
II
406,4 mm (16 in) and larger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .~.
IS0 10422:1993(E)
Footnote identified by “t”: At the end of 3rd line, delete the reference to “API”.
Metric table 6.1
Footnote shall read: “*Equivalent to 4p for 0,452 8 thread per mm (11 112 threads per inch).”
Page 82
Metric figure 7.1
Caption shall read:
‘MACHINING DETAILS - SIZES 127 mm (5 in) THROUGH 155 mm (7 5/a in)”
Right-hand column, 2nd line, shall read: I‘. for sizes over 155 mm (7 ~8 in)“.
Page 83
Metric table 7.1
Heading shall read:
‘I. SIZES 127 mm (5 in) THROUGH 155 mm (7 518 in)”
4th line of the heading: Amend to read I‘. for sizes over 155 mm (7 518 in)“.
Heading of column 2: Substitute “Linear density” for “Nominal Weight” (in two places).
Page 84
Metric figure 7.2
Caption shall read:
“MACHINING DETAILS - SIZES 219 mm (8 5113 in) THROUGH 273 mm (10314 in)”
Right-hand column: Amend to read: ‘I. for sizes under 219 mm (8 5/8 in)“.
Page 85
Metric table 7.2
Heading shall read:
‘I
. . . - SIZES 219 mm (8 518 in) THROUGH 273 mm (10 314 in)”
4th line of the heading: Amend to read ‘I. for sizes under 219 mm (8 5/8 in)“.
Heading of column 2: Substitute “Linear density” for “Nominal Weight” (in two places).
Page 86
Metric figure 7.3
Caption shall read:
“BOX AND PIN ENTRANCE THREADS - SIZES 127 mm (5 in) THROUGH 155 mm (7 518 in)”
for sizes over 155 mm (7 518 in)“.
3rd line below caption: Amend to read ‘I.
Page 87
Metric figure 7.5
Caption shall read:
“BOX AND PIN ENTRANCE THREADS - SIZES 219 mm (8 ~8 in) THROUGH 273 mm (10 314 in)“
3rd line below caption: Amend to read ‘I. for sizes under 219 mm (8 518 in)“.
IS0 10422:1993(E)
Page 88
Metric figure 7.4
Caption shall read:
“PRODUCT THREAD FORM - SIZES 127 mm (5 in) THROUGH 155 mm (7 ~8 in) 0,236 2 THREADS PER mm (6 threads per
in) - 125 mm TAPER PER metre (1 112 in per ft) ON DIAMETER”
2nd line below caption: Amend to read “., sizes over 155 mm (7 518 in)“.
Metric figure 7.6
Caption shall read:
“PRODUCT THREAD FORM - SIZES 219 mm (8 5/8 in) THROUGH 273 mm (10 3/4 in) 0,1969 THREADS PER mm (5 threads
per in) - 39,7 mm TAPER PER metre (1 114 in taper per ft) ON DIAMETER”
2nd line below caption: Amend to read “., sizes under 219 mm (8 518 in)“.
Page 90
Metric table 7.4
3rd line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C”.
Page 97
Metric table 7.5
4th line of the heading: Amend the symbol for degrees Celsius to read “at 20 “C“.
Page 93
Metric figure 7.8
Caption shall read:
II
.S. - SIZES 127 mm (5 in) THROUGH 155 mm (7 518 in)”
5th line below caption: Amend to read ‘I. for sizes over 155 mm (7 518 in)“.
Metric figure 7.9
Caption shall read:
I‘
. . . - SIZES 219 mm (8518 in) THROUGH 273 mm (10 314 in)”
5th line below caption: Amend to read ‘I. for sizes under 219 mm (8 518 in)“.
Page 94
Metric figure 7.10
Caption shall read:
II
. . . -SIZES 127 mm (5 in) THROUGH 155 mm (7 518 in)”
Metric figure 7.11
Caption shall read:
II
. . . - SIZES 219 mm (8 ~8 in) THROUGH 273 mm (10 314 in)”
IS0 10422:1993(E)
Pages 95 to 97
Information given in APPENDIX C is relevant to the API publication only. APPENDIX C therefore shall be deleted.
Page 98
Information given in EXHIBIT A is relevant to the API publication only. EXHIBIT A therefore shall be deleted.
Page 99
EXHIBIT B is relevant to the API publication only. EXHIBIT B therefore shall be deleted.
Page 700
Information in EXHIBIT C is relevant to the API publication only. EXHIBIT C therefore shall be deleted.
IS0 10422:1993(E)
Specification for Threading,
Gaging, and Thread Inspection
of Casing, Tubing, and Line
Pipe Threads
API SPECIFICATION STD 5B (STD 5B)
THIRTEENTH EDITION, MAY 31, 1988
American Petroleum Institute
1220 L Street, Northwest
Washington, DC 20005
This page intentionally left blank

IS0 10422:1993(E)
Issued by
AMERICAN PETROLEUM INSTITUTE
Production Department
FOR INFORMATION CONCERNING TECHNICAL CONTENTS OF
THIS PUBLICATION CONTACT THE API PRODUCTION DEPARTMENT,
211 N. ERVAY, SUITE 1700, DALLAS, TX 75201 - (214) 220-9111.
SEE BACK SIDE FOR INFORMATION CONCERNING HOW TO OBTAIN
ADDITIONAL COPIES OF THIS PUBLICATION.
Users of this publication should become familiar with its
scope and content. This document is intended to supplement
rather than replace individual engineering judgment.
Copyright @ 1988 American Petroleum Institute
IS0 10422:1993(E)
2 American Petroleum Institute
TABLE OF CONTENTS
Page
Policy _______--____-______--.--------------------------------------------.----------------------------------------------------------
_____________________ _________ ___. ____ __-_- -_ _____________________ ______ -- ______________________________
Foreword
__________ __ ______- ___ - ____ -_ ______. -_-- _____._____ -___--_-- ____ _____________________
Section 1 : Scope
Section 2: Thread Dimensions and Tolerances (Line Pipe, Round-
Thread Casing and Tubing, and Buttress Thread
Casing) _. __.___ _ ____ __. ._______ ______ - ____ -._ __ __ _____ _______ -___ --- - 6
Section 3: Gaging Practice (Line Pipe, Round-Thread Casing and
_ _ -_ _ _ _ _ __ ____. _ _ 15
Tubing, and Buttress Thread Casing)
Section 4: Gage Specification (Line Pipe, Round-Thread Casing
and Tubing, and Buttress Thread Casing) ___ _____. ____.
Section 5: Gage Certification (Line Pipe, Round-Thread Casing
and Tubing, and Buttress Thread Casing) _- ________ ___ _ 28
Section 6: Thread Inspection (Line Pipe, Round-Thread Casing
and Tubing, Buttress Thread Casing, and Extreme-
Line Casing) _ _ ____ ____ ____________ - _______ _- ____ ______ - _ __ ___ __ _____ _ __ _
Section 7 : Extreme-Line Casing _ ________ __ _ _. __ ___- - __. ___ ___ _____ _ _ __ -_ ____ _
__ _ ._-. _ 46
Part 1: Thread and Seal Dimensions and Tolerances
-_._- 56
Part 2 : Gaging Practice __________ ______________ __- ___________ ___-__ _ __ _____ ___________ _
Part 3 : Gage Specification __ ____ ___________. ___ ___________ .___ __ __ ________ __ _ _ _ - -- 58
. _____ _.-. --- 66
Part 4 : Gage Certification ___ ___ _ _ ________ _ _. _. .__ _ ______
__ __ __ __ ._ _ _ _ _ 67
Section 8 : Thread Marking ___ ___ _ __ __ _____
Appendix A : Instructions for Shipment of Reference Master Gages
Appendix B : Met.ric Tables and Figures _ __ __ __ __ _ ___ __ _ __ _ __ ____ _
Policy and Procedures for _. _ _ _ _ __ __ _ _. _ _ _ _. _ _ _
Appendix C:
Use of API Monogram
Kujlrc~sts ji)r* j~vt~tttissiorr to t*r~j)t*o(lttw or tt-trttsltrtv crll 0)’
Note
rtttrtt)t-icll jrrthhltd hwitt shrlti hu
(1 II!/ jll rt (!t’ t/w
This edition of Std 5B supersedes the 12th edition
crtltltwxcd to th I)itwtw, I’t-rdtrct iott Ihjtu rtttwttt, ,‘I 1 N.
dated May 31, 1987.
I5*rwy, Su itr I /“OO, Ihlltrs 1X L?Ol.
This specification was originallv issued in lW9 as Std
e
5B, Specification for Inspection of External and Inter-
nal Pipe Threads. Revised editions were issued in 1941
and 1954.
The 4th edition, issued in 1962, was cspandcd to
include. in addition to thread inspection. dimensional
requirements on threads and thread gages. stipulations
on gaging practice, gage specifications, and gage certi-
fication, for casing. tubing. and line pipe. including
couplings, as covered by API Std 5A, 5AC ;‘iAX. and
5L. The title of Std 5B was changed with the -4th edi-
tion to Specification for Threading, Gaging. and Thread
Inspection of Casing. Tubing. and Line Pipe Threads.
Subsequent editions were issued in 1963. lWi5. 193f;K
1971.1974, 1979,1985, and 1987.
Acknowledgment is herebv given to United States
Steel Corporation for dedicaiing to the public all pat-
ents covering buttress casing, and to Armco Division.
Armco Steel Corporation for dedicating to the public
all patents covering extreme-line casing.

IS0 10422:1993(E)
Std 5B: Specification for Inspection of Pipe Threads
POLICY
(a) API PUBLICATIONS NECESSARI,LY ADDRESS SHOULD ANYTHING CONTAINED IN THE PUB-
PROBLEMS OF A GENERAL NATURE. WITH
LICATION BE CONSTRUED AS INSURING ANY-
RESPECT TO PARTICULAR CIRCUMSTANCES, ONE AGAINST LIABILITY FOR INFRINGEMENT
LOCAL, STATE AND FEDERAL LAWS AND REG- OF LETTERS PATENT.
ULATIONS SHOULD BE REVIEWED.
(d) GENERALLY, API STANDARDS ARE RE-
VIEWED AND REVISED, REAFFIRMED, OR
’ (b) API IS NOT UNDERTAKING TO MEET DUTIES
WITHDRAWN AT LEAST EVERY FIVE YEARS.
OF EMPLOYERS, MANUFACTURERS OR SUP-
SOMETIMES A ONE-TIME EXTENSION OF UP TO
PLIERS TO WARN AND PROPERLY TRAIN AND
TWO YEARS WILL BE ADDED TO THIS REVIEW
EQUIP THEIR EMPLOYEES, AND OTHERS EX-
CYCLE. THIS PUBLICATION WILL NO LONGER
POSED, CONCERNING HEALTH AND SAFETY
BE IN EFFECT FIVE YEARS AFTER ITS PUBLI-
RISKS AND PRECAUTIONS, NOR UNDERTAKING
CATION DATE AS AN OPERATIVE API STAND-
THEIR OBLIGATIONS UNDER LOCAL, STATE, OR
ARD OR, WHERE AN EXTENSION HAS BEEN
FEDERAL LAWS.
GRANTED, UPON REPUBLICATION. STATUS OF
(c) NOTHING CONTAINED IN ANY API PUBLI- THE PUBLICATION CAN BE ASCERTAINED
CATION IS TO BE CONSTRUED AS GRANTING FROM THE API PRODUCTION DEPARTMENT
ANY RIGHT, BY IMPLICATION OR OTHERWISE, (TEL. 214-220-9111). A CATALOG OF API PUB-
FOR THE MANUFACTURE, SALE, OR USE OF LICATIONS AND MATERIALS IS PUBLISHED
ANY METHOD, APPARATUS, OR PRODUCT ANNUALLY AND UPDATED QUARTERLY BY
COVERED BY LETTERS PATENT. NEITHER API, 1220 L ST., N.W., WASHINGTON, D.C. 20005.

IS0 10422:1993(E)
American Petroleum Institute
API SPECIFICATION FOR THREADING, GAGING, AND THREAD
INSPECTION OF CASING, TUBING, AND LINE PIPE THREADS
FOREWORD
by expressly disclaims any liability or responsibility for
(a) American Petroleum Institute (API) Specifications
loss or damage resulting from their use, for any viola-
are published as aids to the procurement of standard-
tion of any federal, state, or municipal regulation with
ized equipment and materials, as well as instructions to
which an API Specification may conflict, or for the
manufacturers of equipment or materials covered by an
infringement of any patent resulting from the use of an
API Specification. These Specifications are not intended
API Specification.
to obviate the need for sound engineering, nor to inhibit
in any way anyone from purchasing or producing prod-
ucts to other specifications.
(d) Any manufacturer producing equipment or mate-
rials intended to conform to an API Specification is
(b) The formulation and publication of API Specifica-
responsible for complying with all the provisions of that
tions and the API monogram program is not intended
Specification including all the applicable provisions of
in any way to in
...