ASTM A307-07b

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
...