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ASTM A307-12

(Specification)

Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength

Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 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 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 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 F1789 unless otherwise defined herein.

General Information

Status
Historical
Publication Date
30-Nov-2012
ICS
21.060.10 - Bolts, screws, studs
Technical Committee
F16 - Fasteners
Drafting Committee
F16.02 - Steel Bolts, Studs and Nuts
Current Stage
Ref Project

Relations

Replaces
ASTM A307-10 - Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength
Effective Date
01-Dec-2012
Referred By
ASTM F3204-16 - Standard Guide for Design and Construction of Welded Wire Fence Systems for Security Purposes
Effective Date
01-Dec-2012
Referred By
ASTM F2780-20 - Standard Guide for Design and Construction of Expanded Metal Security Fences and Barriers
Effective Date
01-Dec-2012
Referred By
ASTM B745/B745M-15(2021) - Standard Specification for Corrugated Aluminum Pipe for Sewers and Drains
Effective Date
01-Dec-2012
Referred By
ASTM C806-18 - Standard Test Method for Restrained Expansion of Expansive Cement Mortar
Effective Date
01-Dec-2012
Referred By
ASTM F708-92(2022) - Standard Practice for Design and Installation of Rigid Pipe Hangers
Effective Date
01-Dec-2012
Referred By
ASTM F2437/F2437M-17 - Standard Specification for Carbon and Alloy Steel Compressible-Washer-Type Direct Tension Indicators for Use with Cap Screws, Bolts, Anchors, and Studs
Effective Date
01-Dec-2012
Referred By
ASTM F1155-10(2019) - Standard Practice for Selection and Application of Piping System Materials
Effective Date
01-Dec-2012
Referred By
ASTM A563/A563M-21ae1 - Standard Specification for Carbon and Alloy Steel Nuts (Inch and Metric)
Effective Date
01-Dec-2012
Referred By
ASTM F2548-20 - Standard Specification for Expanded Metal Fence Systems for Security Purposes
Effective Date
01-Dec-2012
Referred By
ASTM B746/B746M-22 - Standard Specification for Corrugated Aluminum Alloy Structural Plate for Field-Bolted Pipe, Pipe-Arches, and Arches
Effective Date
01-Dec-2012
Referred By
ASTM F2363/F2363M-17(2023) - Standard Specification for Sewage and Graywater Flow Through Treatment Systems
Effective Date
01-Dec-2012
Referred By
ASTM B864/B864M-19 - Standard Specification for Corrugated Aluminum Box Culverts
Effective Date
01-Dec-2012
Referred By
ASTM A36/A36M-19 - Standard Specification for Carbon Structural Steel
Effective Date
01-Dec-2012

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ASTM A307-12 - Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile StrengthASTM A307-12 - Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength
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REDLINE ASTM A307-12 - Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile StrengthREDLINE ASTM A307-12 - Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength
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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 −12
StandardSpecification 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 Department of Defense.
1. Scope* 1.5 Supplementary Requirement S1 of an optional nature is
2 provided, which describes additional restrictions to be applied
1.1 This specification covers the chemical and mechanical
whenboltsaretobewelded.Itshallapplyonlywhenspecified
requirements of two grades of carbon steel bolts and studs in
in the inquiry, order, and contract.
1
sizes ⁄4 in. through 4 in. The fasteners are designated by
“Grade”denotingtensilestrengthandintendeduse,asfollows:
1.6 Terms used in this specification are defined in Termi-
nology F1789 unless otherwise defined herein.
Grade Description
Grade A Bolts, studs, and threaded
2. Referenced Documents
rod having a minimum
3
tensile strength of 60 ksi
2.1 ASTM Standards:
and intended for general
A563Specification for Carbon and Alloy Steel Nuts
applications,
A706/A706MSpecification for Low-Alloy Steel Deformed
Grade B Bolts, studs, and threaded
A
rod having a tensile
and Plain Bars for Concrete Reinforcement
strength of 60 to 100 ksi and
A751Test Methods, Practices, and Terminology for Chemi-
intended for flanged joints in
piping systems with cast iron
cal Analysis of Steel Products
flanges, and
Grade C Replaced by Specification B695Specification for Coatings of Zinc Mechanically De-
F1554 Gr.36
posited on Iron and Steel
F606Test Methods for Determining the Mechanical Proper-
A
Threaded rod is not usually produced to Grade B, but can be when specified by
ties of Externally and Internally Threaded Fasteners,
the purchaser.
Washers, Direct Tension Indicators, and Rivets
1.2 This specification does not cover requirements for
F1470Practice for Fastener Sampling for Specified Me-
machine screws, thread cutting/forming screws, mechanical
chanical Properties and Performance Inspection
expansion anchors or similar externally threaded fasteners.
F1554Specification for Anchor Bolts, Steel, 36, 55, and
1.3 Suitable nuts are covered in Specification A563. Unless
105-ksi Yield Strength
otherwisespecified,thegradeandstyleofnutforeachgradeof
F1789Terminology for F16 Mechanical Fasteners
fastener, of all surface finishes, shall be as follows:
F2329Specification 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
2.2 ASME Standards:
B, ⁄4 to 4 in. A, heavy hex
4
B1.1 Unified Screw Threads
A
4
Nuts of other grades and styles having specified proof load stresses (Specifica-
B18.2.1Square and Hex Bolts and Screws
tion A563, Table 3) greater than the specified grade and style of nut are also 5
B18.24Part Identifying Number (PIN) Code System
suitable.
4
B18.31.3Threaded Rods (Inch Series)
1.4 Thevaluesstatedininch-poundunitsaretoberegarded
as the standard.
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 Dec. 1, 2012. Published January 2013. Originally Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
approved in 1947. Last previous edition approved in 2010 as A307–10. DOI: 4th Floor, New York, NY 10036, http://www.ansi.org.
5
10.1520/A0307-12. Available from American Society of Mechanical Engineers (ASME), ASME
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
cation SA-307 in Section II of that Code. www.asme.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

---------------------- Page: 1 ----------------------
A307−12
3. Ordering Information zinc-coating process and the supplier’s option is limited to one
process per item with no mixed processes in a lot.
3.1 Orders for externally threaded fasteners (including nuts
and accessories) under this sp
...

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 − 10 A307 − 12
Standard Specification for
Carbon Steel Bolts and Studs, Bolts, Studs, and Threaded
1
Rod 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. 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 Department of Defense.
1. Scope*
2
1.1 This specification covers the chemical and mechanical requirements of threetwo grades of carbon steel bolts and studs in
1
sizes ⁄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
general applications,
Grade A Bolts, studs, and threaded
rod 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 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.
1.1.1 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 ⁄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.
1.4 The values stated in inch-pound units are to be regarded as the standard.
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 Oct. 1, 2010Dec. 1, 2012. Published December 2010January 2013. Originally approved in 1947. Last previous edition approved in 20072010
as A307 – 07b.A307 –10. DOI: 10.1520/A0307-10.10.1520/A0307-12.
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 − 12
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 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 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 Ro
...

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1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.5 The following precautionary statement pertains only to the test method portion, Section 11, of the specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM A574-21(Specification)
Standard Specification for Alloy Steel Socket-Head Cap Screws

ABSTRACT
This specification covers the requirements for quenched and tempered alloy steel socket-head cap screws. The screws shall be fabricated from steel made to fine grain practice and shall be alloy steel conforming to the chemical composition specified. Different tests shall be conducted in order to determine the following mechanical properties of screws: tensile or wedge strength, proof load, yield strength, elongation, Rockwell hardness, and Vickers hardness.
SCOPE
1.1 This specification covers the requirements for quenched and tempered alloy steel hexagon socket-head cap screws, 0.060 through 4 in. in diameter where high strength is required.  
1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 The following hazard caveat pertains only to the test method portions, Sections 5.1, 5.6, 8, and 12, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM A307-21(Specification)
Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 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 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  
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    
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.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM F1554-20(Specification)
Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength

ABSTRACT
This specification covers the chemical, mechanical, and dimensional requirements, and associated test methods for straight and bent, headed and headless anchor bolts (also known as anchor rods) made of carbon, carbon boron, alloy, or high-strength low-alloy steel and having specified yield strengths. The anchor bolts are furnished in three strength grades, two thread classes, and various sizes, and are intended for anchoring structural supports to concrete foundations such as building columns, column supports for highway signs, street lighting and traffic signals, steel bearing plates, and similar applications. This specification, however, does not cover the requirements for mechanical expansion anchors, powder-activated nails or studs, and anchor bolts fabricated from deformed bars. The bolts shall adhere to specified elemental chemical compositions as examined by heat and product analysis. They shall also be tested for their conformance with mechanical properties such as tensile strength, yield strength, elongation, reduction of area, and stress area. The anchor bolts shall also meet specified values for nominal size, body diameter, bend section, length, bend angle, and coated length.
SCOPE
1.1 This specification covers straight, bent, headed, and headless anchor bolts (also known as anchor rods) made of carbon, medium carbon boron, alloy, or high-strength low-alloy steel. It provides for anchor bolts in three strength grades, two thread classes, and in the diameters specified in Section 4. The specification also covers all-thread rod for use in anchoring to concrete. References to anchor bolts in this standard do not necessarily exclude all-thread rod.  
1.2 Anchor bolts are intended for anchoring structural supports to concrete foundations. Such structural supports include building columns, column supports for highway signs, street lighting and traffic signals, steel bearing plates, and similar applications.  
1.3 Supplementary requirements are included to provide for Grade 55 weldable steel, permanent manufacturers and grade identification, and impact properties for Grades 55 and 105.  
1.4 Zinc coating requirements are in Section 7.  
1.5 Suitable nuts and washers are listed in 6.7. Washers are detailed in 6.8.  
1.6 This specification does not cover mechanical expansion anchors, powder-activated nails or studs, or anchor bolts fabricated from deformed bar.  
1.7 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM F541-12(2020)(Specification)
Standard Specification for Alloy Steel Eyebolts

ABSTRACT
This specification covers the basic requirements and corresponding test methods for forged, quenched, and tempered, alloy steel threaded eyebolts with improved toughness properties and that are chemically and metallurgically constituted to produce a low transition temperature to minimize brittle failure, intended primarily for low temperature applications. The eyebolts are furnished either as straight shank eyebolts (Type 1), or shoulder eyebolts (Type 2). Sampled specimens shall be tested, and conform accordingly to chemical (carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and nickel), metallurgical (grain size, decarburization, and macrotech properties), and mechanical (Brinell hardness, tensile strength, breaking strength, proof load, impact strength, and bend strength) requirements.
SCOPE
1.1 This specification covers forged, quenched and tempered, alloy steel threaded eyebolts with improved toughness properties and intended primarily for low temperature applications. The eyebolts are chemically and metallurgically constituted to produce a low transition temperature to minimize brittle failure. Maximum thread size is 2.500 in. (63.50 mm).  
1.2 The eyebolts are furnished in two types, as follows:  
1.2.1 Type 1—Straight Shank Eyebolt.  
1.2.2 Type 2—Shoulder Eyebolt.  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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