ASTM A307-07
(Specification)Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength
Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength
SCOPE
1.1 This specification covers the chemical and mechanical requirements of three grades of carbon steel bolts and studs in sizes 1/4 in. through 4 in. The fasteners are designated by "Grade" denoting tensile strength and intended use, as follows:Grade DescriptionGrade A Bolts and studs having a minimum tensile strength of 60 ksi and intended for general applications,Grade B Bolts and studs having a tensile strength of 60 to 100 ksi and intended for flanged joints in piping systems with cast iron flanges, andGrade C Replaced by Specification F 1554 Gr.36
1.1.1 The term studs includes stud stock, sometimes referred to as threaded rod.
1.2 This specification does not cover requirements for machine screws, thread cutting/forming screws, mechanical expansion anchors or similar externally threaded fasteners.
1.3 Suitable nuts are covered in Specification A 563. Unless otherwise specified, the grade and style of nut for each grade of fastener, of all surface finishes, shall be as follows: Fastener Grade and Size Nut Grade and Style A 1/ 4 to 11/2in.A, hex A over 11/2 to 4 in.A, heavy hex B, 1/ 4 to 4 in.A, heavy hex Nuts of other grades and styles having specified proof load stresses (Specification A 563, Table 3) greater than the specified grade and style of nut are also suitable.
1.4 The values stated in inch-pound units are to be regarded as the standard.
1.5 Supplementary Requirement S1 of an optional nature is provided, which describes additional restrictions to be applied when bolts are to be welded. It shall apply only when specified in the inquiry, order, and contract.
1.6 Terms used in this specification are defined in Terminology F 1789 unless otherwise defined herein.
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Designation: A 307 – 07
Standard Specification for
1
Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength
This standard is issued under the fixed designation A307; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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.
1. Scope* 1.6 Terms used in this specification are defined in Termi-
2
nology F1789 unless otherwise defined herein.
1.1 This specification covers the chemical and mechanical
requirements of three grades of carbon steel bolts and studs in
2. Referenced Documents
1
sizes ⁄4 in. through 4 in. The fasteners are designated by
3
2.1 ASTM Standards:
“Grade”denotingtensilestrengthandintendeduse,asfollows:
A153/A153M SpecificationforZincCoating(Hot-Dip)on
Grade Description
Iron and Steel Hardware
Grade A Bolts and studs having a
A370 TestMethodsandDefinitionsforMechanicalTesting
minimum tensile strength of
of Steel Products
60 ksi and intended for gen-
A563 Specification for Carbon and Alloy Steel Nuts
eral applications,
Grade B Bolts and studs having a
A 706/A 706M Specification for Low-Alloy Steel De-
tensile strength of 60 to 100
formed and Plain Bars for Concrete Reinforcement
ksi and intended for flanged
A 751 Test Methods, Practices, and Terminology for
joints in piping systems with
cast iron flanges, and
Chemical Analysis of Steel Products
Grade C Replaced by Specification
B695 Specification for Coatings of Zinc Mechanically
F 1554 Gr.36
Deposited on Iron and Steel
1.1.1 The term studs includes stud stock, sometimes re-
D3951 Practice for Commercial Packaging
ferred to as threaded rod.
F606 Test Methods for Determining the Mechanical Prop-
1.2 This specification does not cover requirements for
erties of Externally and Internally Threaded Fasteners,
machine screws, thread cutting/forming screws, mechanical
Washers, Direct Tension Indicators, and Rivets
expansion anchors or similar externally threaded fasteners.
F1470 GuideforFastenerSamplingforSpecifiedMechani-
1.3 SuitablenutsarecoveredinSpecificationA563.Unless
cal Properties and Performance Inspection
otherwisespecified,thegradeandstyleofnutforeachgradeof
F1554 Specification for Anchor Bolts, Steel, 36, 55, and
fastener, of all surface finishes, shall be as follows:
105-ksi Yield Strength
A
Fastener Grade and Size Nut Grade and Style
F1789 Terminology for F16 Mechanical Fasteners
1 1
A ⁄4 to 1 ⁄2 in. A, hex
2.2 ASME Standards:
1
A over 1 ⁄2 to 4 in. A, heavy hex
4
1
B, ⁄4 to 4 in. A, heavy hex B1.1 Unified Screw Threads
4
A
B18.2.1 Square and Hex Bolts and Screws
Nuts of other grades and styles having specified proof load stresses (Speci-
5
ficationA 563, Table 3) greater than the specified grade and style of nut are also
B18.24 Part Identifying Number (PIN) Code System
suitable.
1.4 Thevaluesstatedininch-poundunitsaretoberegarded
3. Ordering Information
as the standard.
3.1 Orders for externally threaded fasteners (including nuts
1.5 Supplementary Requirement S1 of an optional nature is
and accessories) under this specification shall include the
provided, which describes additional restrictions to be applied
following:
whenboltsaretobewelded.Itshallapplyonlywhenspecified
3.1.1 ASTM designation and year of issue,
in the inquiry, order, and contract.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This specification is under the jurisdiction of ASTM Committee F16 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Standards volume information, refer to the standard’s Document Summary page on
Nuts, Rivets and Washers. the ASTM website.
4
Current edition approved June 15, 2007. Published June 2007. Originally Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
approved in 1947. Last previous edition approved in 2004 as A307–04. 4th Floor, New York, NY 10036.
2 5
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from American Society of Mechanical Engineers (ASME), ASME
cation SA-307 in Section II of that Code. International Headquarters, Three Park Ave., New York, NY 10016-5990.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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A307–07
TABLE 1 Chemical Requirements for Grades A and B Bolts and
3.1.2 Name of product, bolts or studs; and bolt head style,
Studs
that is, hex or heavy hex,
Heat Analysis Produc
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation:A307–04 Designation: A 307 – 07
Standard Specification for
1
Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength
This standard is issued under the fixed designation A307; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1
´ NOTE—Sections 2.2 and 3.1.12 were editorially revised in October 2006.
1. Scope*
1.1This specification
2
1.1 Thisspecification coversthechemicalandmechanicalrequirementsofthreegradesofcarbonsteelboltsandstudsinsizes
1
⁄4 in. (6.35 mm) through 4 in. (104 mm). The fasteners are designated by “Grade” denoting tensile strength and intended use, as
follows:
Grade Description
Grade A Bolts and studs having a
minimum tensile strength of
60 ksi (414 MPa) and in-
tended for general applica-
tions,
Grade A Bolts and studs having a
minimum tensile strength of
60 ksi and intended for gen-
eral applications,
Grade B Bolts and studs having a
tensile strength of 60 to 100
ksi (414 to 690 MPa) and
intended for flanged joints in
piping systems with cast iron
flanges, and
Grade B Bolts and studs having a
tensile strength of 60 to 100
ksi and intended for flanged
joints in piping systems with
cast iron flanges, and
Grade C Nonheaded anchor bolts,
either bent or straight, hav-
ing properties conforming to
Specification A 36/A 36M
(tensile strength of 58 to 80
ksi (400 to 550 MPa)) and
intended for structural an-
chorage purposes.
Grade C Replaced by Specification
F 1554 Gr.36
1.1.1 The term studs includes stud stock, sometimes referred to as threaded rod.
1.2 This specification does not cover requirements for machine screws, thread cutting/forming screws, mechanical expansion
anchors or similar externally threaded fasteners.
1.3 Suitable nuts are covered in Specification A563. Unless otherwise specified, the grade and style of nut for each grade of
fastener, of all surface finishes, shall be as follows:
A
Fastener Grade and Size Nut Grade and Style
1 1
A, C, ⁄4 to 1 ⁄2 in. A, hex
1 1
A ⁄4 to 1 ⁄2 in. A, hex
1
This specification is under the jurisdiction of ASTM Committee F16 on Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Nuts,
Rivets,Rivets and Washers.
Current edition approved Aug. 1, 2004.June 15, 2007. Published August 2004.June 2007. Originally approved in 1947. Last previous edition approved in 20032004 as
A307–034.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-307 in Section II of that Code.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A307–07
1
A, C, over 1 ⁄2to4in. A, heavy hex
1
A over 1 ⁄2to4in. A, heavy hex
1
B, ⁄4to4in. A, heavy hex
A
Nuts of other grades and styles having specified proof load stresses (SpecificationA 563, Table 3) greater than the specified grade and style of nut are also suitable.
1.4The values stated in inch-pound units are to be regarded as the standard.The values given in parentheses are for information
only.
1.4 The values stated in inch-pound units are to be regarded as the standard.
1.5 SupplementaryRequirementS1ofanoptionalnatureisprovided,whichdescribesadditionalrestrictionstobeappliedwhen
bolts are to be welded. It shall apply only when specified in the inquiry, order, and contract.
1.6 Terms used in this specification are defined in Terminology F1789 unless otherwise defined herein.
2. Referenced Documents
3
2.1 ASTM Standards: A36/A36MSpecification for Carbon Structural Steel
A153/A153M Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
A370Test370 Test Methods and Definitions for Mechanical Testing of Steel Products
A563 Specification for Carbon and Alloy Steel Nuts
A706/A706M Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel
D3951 Practice for Commercial Packaging
F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers,
Direct Tension Indicators, and Rivets
F1470 Guide
...
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