ASTM F879M-02

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: F 879M – 02
METRIC
Standard Specification for
Stainless Steel Socket Button and Flat Countersunk Head
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Cap Screws [Metric]
This standard is issued under the fixed designation F 879M; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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1. Scope D 3951 Practice for Commercial Packaging
F 606M Test Methods for Determining the Mechanical
1.1 This specification covers the chemical and mechanical
Properties of Externally and Internally Threaded Fasteners,
requirements for stainless steel metric hexagon socket button
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Washers, and Rivets [Metric]
(SBHCS) and flat countersunk (SFHCS) head cap screws with
F 738M Specification for Stainless Steel Metric Bolts,
nominal thread M 3 through M 20 intended for use in applica-
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Screws, and Studs
tions requiring general corrosion resistance.
F 788/F788M Specification for Surface Discontinuities of
1.2 Two property classes are covered:
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Bolts, Screws, and Studs, Inch and Metric Series
1.2.1 Austenitic Class A 1-50 in an annealed condition at
F 1470 Guide for Fastener Sampling for Specified Mechani-
500 MPa minimum, and
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cal Properties and Performance Inspection
1.2.2 Austenitic Class A 1-70 in a cold-worked condition at
2.2 ASME Standards:
700 MPa minimum.
B 18.3.4M Hexagon Socket Button Head Cap Screws (Met-
1.3 The following hazard caveat pertains only to Section 12,
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ric Series)
Test Methods: This standard does not purport to address all of
B 18.3.5M Hexagon Socket Flat Countersunk Head Cap
the safety problems, if any, associated with its use. It is the
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Screws (Metric Series)
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3. Classification
bility of regulatory limitations prior to use.
3.1 The designation of the property class and conditions of
2. Referenced Documents this specification shall be consistent with the stainless steel
designations in Specification F 738M.
2.1 ASTM Standards:
3.2 The austenitic stainless steel socket screw shall be
A 262 Practices for Detecting Susceptibility to Intergranu-
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designated F 879M A 1-50 or F 879M A 1-70.
lar Attack in Austenitic Stainless Steels
A 342 Test Methods for Permeability of Feebly Magnetic
4. Ordering Information
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Materials
4.1 Orders for material under this specification shall include
A 380 Practice for Cleaning, Descaling, and Passivation of
2 the following information:
Stainless Steel Parts, Equipment, and Systems
4.1.1 Quantity (number of pieces of each item).
A 555/A555M Specification for General Requirements for
2 4.1.2 Name of the screw, SBHCS or SFHCS.
Stainless Steel Wire and Wire Rods
4.1.3 Dimensions, including nominal thread designation,
A 751 Test Methods, Practices, and Terminology for
2 thread pitch, and nominal screw length (millimetres). A stan-
Chemical Analysis of Steel Products
dard part number may be used for this definition.
A 967 Specification for Chemical Passivation Treatments
2 4.1.4 Property Class A 1-50 or A 1-70.
for Stainless Steel Parts
4.1.5 Certification, if required (see Section 15).
4.1.6 ASTM specification and year of issue.
4.1.7 Any special or supplemental requirements (see
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This specification is under the jurisdiction of ASTM Committee F16 on
Fasteners and is the direct responsibility of Subcommittee F16.04 on Nonferrous
Fasteners.
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Current edition approved June 10, 2002. Published June 2002. Originally Annual Book of ASTM Standards, Vol 15.09.
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published as F 879 – 84. Last previous edition F 879 – 01. Annual Book of ASTM Standards, Vol 01.08.
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Annual Book of ASTM Standards, Vol 01.03. Available from Global Engineering Documents, 15 Inverness Way East,
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Annual Book of ASTM Standards, Vol 03.04. Englewood, CO 80112.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
F 879M
Supplementary Requirements S1 through S3). not be subject to tension tests, but shall conform to the
maximum and minimum hardness requirements of Table 1.
5. Materials and Manufacture
8. Corrosion Resistance Requirements
5.1 Screws shall be formed by upsetting or extruding, or
both. 8.1 Carbide Precipitation:
5.2 Screws shall be roll threaded. 8.1.1 Austenitic alloy rod, bar, and wire used to make
5.3 Heat Treatment—Austenitic alloys Class A
...