ASTM A307-07a
(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:
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:
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 – 07a
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:
A370 TestMethodsandDefinitionsforMechanicalTesting
Grade Description
of Steel Products
Grade A Bolts and studs having a
A563 Specification for Carbons and Alloy Steel Nuts
minimum tensile strength of
A 706/A 706M Specification for Low-Alloy Steel De-
60 ksi and intended for gen-
formed and Plain Bars for Concrete Reinforcement
eral applications,
Grade B Bolts and studs having a
A 751 Test Methods, Practices, and Terminology for
tensile strength of 60 to 100
Chemical Analysis of Steel Products
ksi and intended for flanged
B695 Specification for Coatings of Zinc Mechanically
joints in piping systems with
cast iron flanges, and
Deposited on Iron and Steel
Grade C Replaced by Specification
D3951 Practice for Commercial Packaging
F 1554 Gr.36
F606 Test Methods for Determining the Mechanical Prop-
1.1.1 The term studs includes stud stock, sometimes re-
erties of Externally and Internally Threaded Fasteners,
ferred to as threaded rod.
Washers, Direct Tension Indicators, and Rivets
1.2 This specification does not cover requirements for
F1470 GuideforFastenerSamplingforSpecifiedMechani-
machine screws, thread cutting/forming screws, mechanical
cal Properties and Performance Inspection
expansion anchors or similar externally threaded fasteners.
F1554 Specification for Anchor Bolts, Steel, 36, 55, and
1.3 SuitablenutsarecoveredinSpecificationA563.Unless
105-ksi Yield Strength
otherwisespecified,thegradeandstyleofnutforeachgradeof
F1789 Terminology for F16 Mechanical Fasteners
fastener, of all surface finishes, shall be as follows:
F2329 Specification for Zinc Coating, Hot-Dip, Require-
A
Fastener Grade and Size Nut Grade and Style
ments for Application to Carbon and Alloy Steel Bolts,
1 1
A ⁄4 to 1 ⁄2 in. A, hex
Screws, Washers, Nuts, and Special Threaded Fasteners
1
A over 1 ⁄2 to 4 in. A, heavy hex
1
B, ⁄4 to 4 in. A, heavy hex 2.2 ASME Standards:
4
A
B1.1 Unified Screw Threads
Nuts of other grades and styles having specified proof load stresses (Speci-
4
ficationA 563, Table 3) greater than the specified grade and style of nut are also
B18.2.1 Square and Hex Bolts and Screws
suitable.
5
B18.24 Part Identifying Number (PIN) Code System
1.4 Thevaluesstatedininch-poundunitsaretoberegarded
as the standard.
3. Ordering Information
1.5 Supplementary Requirement S1 of an optional nature is
3.1 Orders for externally threaded fasteners (including nuts
provided, which describes additional restrictions to be applied
and accessories) under this specification shall include the
whenboltsaretobewelded.Itshallapplyonlywhenspecified
following:
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 Aug. 1, 2007. Published August 2007. Originally Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
approved in 1947. Last previous edition approved in 2007 as A307–07. 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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A 307 – 07a
TABLE 1 Chemical Requirements for Grades A and B Bolts and
3.1.1 ASTM designation and year of issue,
Studs
3.1.2 Nam
...
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:A307–07 Designation: A 307 – 07a
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: A153/A153MSpecification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
A370 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
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 approved June 15,Aug. 1, 2007. Published JuneAugust 2007. Originally approved in 1947. Last previous edition approved in 20042007 asA307–047.
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 – 07a
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
F1789Terminology for F16 Mechanical Fasteners 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)underthisspecific
...
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