ASTM A307-07b
(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
ABSTRACT
This specification covers the chemical and mechanical requirements for three grades (Grades A, B, and C) of carbon steel bolts and studs in specified sizes. This specification does not cover the requirements for machine screws, thread cutting/forming screws, mechanical expansion anchors, or other similar externally threaded fasteners. When tested, sampled specimens shall adhere to specified values for chemical composition, hardness, tensile strength, yield point, elongation, and dimensions.
SCOPE
1.1 This specification covers the chemical and mechanical requirements of three grades of carbon steel bolts and studs in sizes ¼ in. through 4 in. 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 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, and 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 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 StyleA
A ¼ to 1½in. A, hex A over 11/2 to 4 in. A, heavy hex B, ¼ to 4 in. A, heavy hex
A 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: A307 – 07b
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. 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:
A563 Specification for Carbon and Alloy Steel Nuts
Grade Description
A706/A706M Specification for Low-Alloy Steel Deformed
Grade A Bolts and studs having a
and Plain Bars for Concrete Reinforcement
minimum tensile strength of
A751 TestMethods,Practices,andTerminologyforChemi-
60 ksi and intended for gen-
cal Analysis of Steel Products
eral applications,
Grade B Bolts and studs having a
B695 Specification for Coatings of Zinc Mechanically De-
tensile strength of 60 to 100
posited on Iron and Steel
ksi and intended for flanged
D3951 Practice for Commercial Packaging
joints in piping systems with
cast iron flanges, and
F606 Test Methods for Determining the Mechanical Prop-
Grade C Replaced by Specification
erties of Externally and Internally Threaded Fasteners,
F1554 Gr.36
Washers, Direct Tension Indicators, and Rivets
1.1.1 The term studs includes stud stock, sometimes re-
F1470 Practice for Fastener Sampling for Specified Me-
ferred to as threaded rod.
chanical Properties and Performance Inspection
1.2 This specification does not cover requirements for
F1554 Specification for Anchor Bolts, Steel, 36, 55, and
machine screws, thread cutting/forming screws, mechanical
105-ksi Yield Strength
expansion anchors or similar externally threaded fasteners.
F1789 Terminology for F16 Mechanical Fasteners
1.3 Suitable nuts are covered in SpecificationA563. Unless
F2329 Specification for Zinc Coating, Hot-Dip, Require-
otherwisespecified,thegradeandstyleofnutforeachgradeof
ments for Application to Carbon and Alloy Steel Bolts,
fastener, of all surface finishes, shall be as follows:
Screws, Washers, Nuts, and Special Threaded Fasteners
A
Fastener Grade and Size Nut Grade and Style
2.2 ASME Standards:
1 1
A ⁄4 to 1 ⁄2 in. A, hex
4
B1.1 Unified Screw Threads
1
A over 1 ⁄2 to 4 in. A, heavy hex
4
1
B, ⁄4 to 4 in. A, heavy hex B18.2.1 Square and Hex Bolts and Screws
5
A
B18.24 Part Identifying Number (PIN) Code System
Nuts of other grades and styles having specified proof load stresses (Speci-
fication A563, Table 3) greater than the specified grade and style of nut are also
suitable.
3. Ordering Information
1.4 Thevaluesstatedininch-poundunitsaretoberegarded
3.1 Orders for externally threaded fasteners (including nuts
as the standard.
and accessories) under this specification shall include the
1.5 Supplementary Requirement S1 of an optional nature is
following:
provided, which describes additional restrictions to be applied
3.1.1 ASTM designation and year of issue,
whenboltsaretobewelded.Itshallapplyonlywhenspecified
3.1.2 Name of product, bolts or studs; and bolt head style,
in the inquiry, order, and contract.
that is, hex or heavy hex,
1 3
This specification is under the jurisdiction of ASTM Committee F16 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Nuts, Rivets and Washers. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2007. Published January 2008. Originally the ASTM website.
4
approved in 1947. Last previous edition approved in 2007 as A307–07a. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/A0307-07B. 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
---------------------- Page: 1 ----------------------
A307 – 07b
TABLE 1 Chemical Requirem
...
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.
Designation:A307–07a Designation: A 307 – 07b
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. Scope*
2
1.1 Thisspecification coversthechemicalandmechanicalrequirementsofthreegradesofcarbonsteelboltsandstudsinsizes
1
⁄4 in. through 4 in. 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 and intended for gen-
eral 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, and
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 ⁄4 to 1 ⁄2 in. A, 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.
1.4 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:
A370Test 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
1
This specification is under the jurisdiction ofASTM Committee F16 on Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Nuts, Rivets
and Washers.
Current edition approvedAug.Dec. 1, 2007. PublishedAugust 2007.January 2008. Originally approved in 1947. Last previous edition approved in 2007 asA307–07a.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-307 in Section II of that Code.
3
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
A 307 – 07b
F1470 Guide for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
F1554 Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength
F1789 Terminology for F16 Mechanical Fasteners
F2329 Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws,
Washers, Nuts, and Special Threaded Fasteners
2.2 ASME Standards:
4
B1.1 Unified Screw Threads
4
B18.2.1 Square and Hex Bolts and Screws
5
B18.24 Part Identifying Number (PIN) Code System
3. Ordering Information
3.1 Ordersforexternallythreadedfasteners(includingnutsandaccessories)underthisspecificationshallincludethefollowing:
3.1.1 ASTM designation and year of issue,
3.1.2 Name of product, bolts or studs; and bo
...
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.
Designation:A307–07a Designation: A 307 – 07b
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. Scope*
2
1.1 Thisspecification coversthechemicalandmechanicalrequirementsofthreegradesofcarbonsteelboltsandstudsinsizes
1
⁄4 in. through 4 in. 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 and intended for gen-
eral 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, and
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 ⁄4 to 1 ⁄2 in. A, 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.
1.4 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:
A370Test 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
1
This specification is under the jurisdiction ofASTM Committee F16 on Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Nuts, Rivets
and Washers.
Current edition approvedAug.Dec. 1, 2007. PublishedAugust 2007.January 2008. Originally approved in 1947. Last previous edition approved in 2007 asA307–07a.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-307 in Section II of that Code.
3
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
A 307 – 07b
F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
F1554 Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength
F1789 Terminology for F16 Mechanical Fasteners
F2329 Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws,
Washers, Nuts, and Special Threaded Fasteners
2.2 ASME Standards:
4
B1.1 Unified Screw Threads
4
B18.2.1 Square and Hex Bolts and Screws
5
B18.24 Part Identifying Number (PIN) Code System
3. Ordering Information
3.1 Ordersforexternallythreadedfasteners(includingnutsandaccessories)underthisspecificationshallincludethefollowing:
3.1.1 ASTM designation and year of issue,
3.1.2 Name of product, bolts or studs; and
...
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