ASTM A307-14

Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60000 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 specification2 covers the chemical and mechanical requirements of two 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  
Description  
Grade A  
Bolts, studs, and threaded rod having a minimum tensile strength of 60 ksi and intended for general applications,  
Grade B  
Bolts, studs, and threaded rodA 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 F1554 Gr.36(A) Threaded rod is not usually produced to Grade B, but can be when specified by the purchaser.  
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:    
Fastener Grade and Size  
Nut Grade and StyleA    
A 1/4 to 11/2 in.  
A, hex  
A over 11/2 to 4 in.  
A, heavy hex  
B, 1/4 to 4 in.  
A, heavy hex (A) Nuts of other grades and styles having specified proof load stresses (Specification A563, 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 standard. No other units of measurement are included in this 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 F1789 unless otherwise defined herein.

General Information

• Status: Historical
• Publication Date: 30-Sep-2014
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.02 - Steel Bolts, Studs and Nuts

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:A307 −14
Standard Specification for
Carbon Steel Bolts, Studs, and Threaded Rod 60000 PSI
1
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 U.S. Department of Defense.
1. Scope* 1.4 Thevaluesstatedininch-poundunitsaretoberegarded
2 asstandard.Nootherunitsofmeasurementareincludedinthis
1.1 This specification covers the chemical and mechanical
standard.
requirements of two grades of carbon steel bolts and studs in
1
sizes ⁄4 in. through 4 in. The fasteners are designated by 1.5 Supplementary Requirement S1 of an optional nature is
“Grade”denotingtensilestrengthandintendeduse,asfollows: provided, which describes additional restrictions to be applied
whenboltsaretobewelded.Itshallapplyonlywhenspecified
Grade Description
in the inquiry, order, and contract.
Grade A Bolts, studs, and threaded
1.6 Terms used in this specification are defined in Termi-
rod having a minimum
tensile strength of 60 ksi
nology F1789 unless otherwise defined herein.
and intended for general
applications,
2. Referenced Documents
Grade B Bolts, studs, and threaded
A 3
rod having a tensile
2.1 ASTM Standards:
strength of 60 to 100 ksi and
intended for flanged joints in A563Specification for Carbon and Alloy Steel Nuts
piping systems with cast iron
A706/A706MSpecification for Deformed and Plain Low-
flanges, and
Grade C Replaced by Specification Alloy Steel Bars for Concrete Reinforcement
F1554 Gr.36
A751Test Methods, Practices, and Terminology for Chemi-
cal Analysis of Steel Products
A
Threaded rod is not usually produced to Grade B, but can be when specified by
B695Specification for Coatings of Zinc Mechanically De-
the purchaser.
posited on Iron and Steel
1.2 This specification does not cover requirements for
F606Test Methods for Determining the Mechanical Proper-
machine screws, thread cutting/forming screws, mechanical
ties of Externally and Internally Threaded Fasteners,
expansion anchors or similar externally threaded fasteners.
Washers, Direct Tension Indicators, and Rivets
1.3 Suitable nuts are covered in Specification A563. Unless
F788/F788MSpecification for Surface Discontinuities of
otherwisespecified,thegradeandstyleofnutforeachgradeof
Bolts, Screws, and Studs, Inch and Metric Series
fastener, of all surface finishes, shall be as follows:
F1470Practice for Fastener Sampling for Specified Me-
A
Fastener Grade and Size Nut Grade and Style chanical Properties and Performance Inspection
1 1
A ⁄4 to 1 ⁄2 in. A, hex
F1554Specification for Anchor Bolts, Steel, 36, 55, and
1
A over 1 ⁄2 to 4 in. A, heavy hex
105-ksi Yield Strength
1
B, ⁄4 to 4 in. A, heavy hex
F1789Terminology for F16 Mechanical Fasteners
A
Nuts of other grades and styles having specified proof load stresses (Specifica- F2329Specification for Zinc Coating, Hot-Dip, Require-
tion A563, Table 3) greater than the specified grade and style of nut are also
ments for Application to Carbon and Alloy Steel Bolts,
suitable.
Screws, Washers, Nuts, and Special Threaded Fasteners
2.2 ASME Standards:
4
B1.1 Unified Screw Threads
4
B18.2.1Square and Hex Bolts and Screws
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,
3
Nuts, Rivets and Washers. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2014. Published October 2014. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1947. Last previous edition approved in 2012 as A307–12. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/A0307-14. the ASTM website.
2
4
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
cation SA-307 in Section II of that Code. 4th Floor, New York, NY 10036, http://www.ansi.org.
*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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A307−14
5
B18.24Part Identifying Number (PIN) Code System 4.5.4 When no preference is specified, the supplier may
4
B18.31.3Threaded Rods (Inch Series) furnish either a hot-dip zinc coating in accordance with
Specification F2329, or a mechanically deposited zinc coating
3. Ordering Information
in accordance with Specification B695, Cl
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM 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 − 12 A307 − 14
Standard Specification for
Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI
1
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. A number 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 U.S. Department of Defense.
1. Scope*
2
1.1 This specification covers the chemical and mechanical requirements of two 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 Description
Grade A Bolts, studs, and threaded
rod having a minimum
tensile strength of 60 ksi
and intended for general
applications,
Grade B Bolts, studs, and threaded
A
rod 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
F1554 Gr.36
A
Threaded rod is not usually produced to Grade B, but can be when specified by the purchaser.
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 ⁄2 to 4 in. A, heavy hex
1
B, ⁄4 to 4 in. A, heavy hex
A
Nuts of other grades and styles having specified proof load stresses (Specification A563, Table 3) greater than the specified grade and style of nut are also suitable.
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
and Washers.
Current edition approved Dec. 1, 2012Oct. 1, 2014. Published January 2013October 2014. Originally approved in 1947. Last previous edition approved in 20102012 as
A307 –10. –12. DOI: 10.1520/A0307-12.10.1520/A0307-14.
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 − 14
1.4 The values stated in inch-pound units are to be regarded as the standard. standard. No other units of measurement are
included in this 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 F1789 unless otherwise defined herein.
2. Referenced Documents
3
2.1 ASTM Standards:
A563 Specification for Carbon and Alloy Steel Nuts
A706/A706M Specification for Deformed and Plain Low-Alloy Steel 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
F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct
Tension Indicators, and Rivets
F788/F788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series
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
B 1.1 Unified Screw Threads
4
B 18.2.1 Square and Hex Bolts and Screws
5
B 18.24 Part Identifying Number (PIN) Code System
4
B18.31.3 Threaded Rods (Inch Series)
3. Ordering Information
3.1 Orders for externally threaded fasteners (including nuts and accessories) under this specification shall include the following:
3.1.1 ASTM designation and year of issue,
3.1.2
...