ASTM A574-08

Standard Specification for Alloy Steel Socket-Head Cap Screws

ABSTRACT
This specification covers the requirements for quenched and tempered alloy steel hexagon socket-head cap screws. The screws shall be fabricated from steel which has been made by the open-hearth, basic-oxygen, or electric-furnace process. The screws shall be fabricated from alloy steel made to a fine grain practice. The screws shall be alloy steel conforming to the chemical composition specified. There shall be no evidence of carburization or total decarburization on the surfaces of the heat-treated screws when measured. Hardness, tensile strength, yield strength, and elongation shall be tested to meet the requirements prescribed.
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.
Note 1—A complete metric companion to Specification A 574 has been developed—A 574M; therefore no metric equivalents are presented in this specification.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Nov-2008
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.02 - Steel Bolts, Studs and Nuts

Relations

• Replaces: ASTM A574-04e1 - Standard Specification for Alloy Steel Socket-Head Cap Screws
• Effective Date: 01-Dec-2008
• Replaced By: ASTM A574-11 - Standard Specification for Alloy Steel Socket-Head Cap Screws
• Effective Date: 01-May-2011
• Referred By: ASTM F2798-09(2023) - Standard Specification for Sealless Lube Oil Pump with Oil Through Motor for Marine Applications
• Effective Date: 01-Dec-2008
• Referred By: ASTM F1624-12(2018) - Standard Test Method for Measurement of Hydrogen Embrittlement Threshold in Steel by the Incremental Step Loading Technique
• Effective Date: 01-Dec-2008
• Referred By: ASTM F541-12(2020) - Standard Specification for Alloy Steel Eyebolts
• Effective Date: 01-Dec-2008
• Referred By: ASTM F1476-07(2019) - Standard Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications
• Effective Date: 01-Dec-2008
• Referred By: ASTM F1510-21 - Standard Specification for Rotary Positive Displacement Pumps, Ships Use
• Effective Date: 01-Dec-2008
• Referred By: ASTM F3561-23 - Standard Test Method for Forced-Entry-Resistance of Fenestration Systems After Simulated Active Shooter Attack
• Effective Date: 01-Dec-2008
• Referred By: ASTM F1718-01(2019) - Standard Specification for Rotary Positive Displacement Distillate Fuel Pumps
• Effective Date: 01-Dec-2008
• Referred By: ASTM F1233-21 - Standard Test Method for Security Glazing Materials And Systems
• Effective Date: 01-Dec-2008

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: A574 – 08
Standard Specification for
1
Alloy Steel Socket-Head Cap Screws
This standard is issued under the fixed designation A574; 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* F1940 Test Method for Process Control Verification to
Prevent Hydrogen Embrittlement in Plated or Coated
1.1 This specification covers the requirements for quenched
Fasteners
and tempered alloy steel hexagon socket-head cap screws,
F2282 Specification for Quality Assurance Requirements
0.060through4in.indiameterwherehighstrengthisrequired.
for Carbon and Alloy Steel Wire, Rods, and Bars for
1.2 The values stated in inch-pound units are to be regarded
Mechanical Fasteners
as standard. No other units of measurement are included in this
F2328 Test Method for Determining Decarburization and
standard.
Carburization in Hardened and Tempered Threaded Steel
NOTE 1—Acomplete metric companion to SpecificationA574 has been
Bolts, Screws and Studs
developed—A574M; therefore no metric equivalents are presented in this
3
2.2 ASME Standards:
specification.
B18.3 Socket Cap, Shoulder, and Set Screws
1.3 The following hazard caveat pertains only to the test
B18.12 Glossary of Terms for Mechanical Fasteners
method portions, sections 5.1, 5.6, 8, and 12, of this specifi-
B18.24 Part Identifying Number (PIN) Code System Stan-
cation. This standard does not purport to address all of the
dard for B18 Fastener Products
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 3. Terminology
priate safety and health practices and determine the applica-
3.1 Definitions of Terms Specific to This Standard—The
bility of regulatory limitations prior to use.
definition of terms used in this specification shall be as
specified in Terminology F1789, ASME B18.12, or the appli-
2. Referenced Documents
cable referenced standards, unless otherwise defined herein. In
2
2.1 ASTM Standards:
the event that there are differences for a given term, ASTM
A751 Test Methods, Practices, andTerminology for Chemi-
definitions shall be used.
cal Analysis of Steel Products
E112 Test Methods for Determining Average Grain Size 4. Ordering Information
F606 Test Methods for Determining the Mechanical Prop-
4.1 Orders for socket head cap screws under this specifica-
erties of Externally and Internally Threaded Fasteners,
tion shall include the following information:
Washers, Direct Tension Indicators, and Rivets
4.1.1 ASTM designation and year of issue.
F788/F788M Specification for Surface Discontinuities of
4.1.2 Name of the screw (SHCS).
Bolts, Screws, and Studs, Inch and Metric Series
4.1.3 Quantity (number of pieces by size).
F1470 Practice for Fastener Sampling for Specified Me-
4.1.4 Dimensions, including nominal thread designation,
chanical Properties and Performance Inspection
thread pitch, and nominal screw length.
F1789 Terminology for F16 Mechanical Fasteners
4.2 Orders for socket head cap screws shall include the
following optional requirements if specified by the purchaser:
4.2.1 Inspection at point of manufacture.
4.2.2 Coating, if a protective finish other than those, which
1
This specification is under the jurisdiction of ASTM Committee F16 on
are described in 5.5 is required, it must be specified (see 5.6).
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
Nuts, Rivets and Washers.
4.2.3 Certified test reports, as required (see Section 15).
Current edition approved Dec. 1, 2008. Published January 2009. Originally
4.2.4 Additional testing (see 12.1).
´1
approved in 1967. Last previous edition approved in 2004 as A574 – 04 . DOI:
10.1520/A0574-08.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
the ASTM website. 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 ----------------------
A574 – 08
4.2.5 Special packaging (see 18.1.2). 5.6.2 When protective or decorative coatings are applied to
4.2.6 Supplementary requirements (see S1). the screws, precautions specified by the coating r
...

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.
´1
Designation:A 574–04 Designation: A574 – 08
Standard Specification for
1
Alloy Steel Socket-Head Cap Screws
This standard is issued under the fixed designation A574; 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 (ϵ) 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
ϵ NOTE—Sections 2.2 and 4.2.8 were editorially revised in October 2006.
1. Scope*
1.1This 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.
1.1 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.
NOTE 1—A complete metric companion to Specification A574 has been developed—A574M; therefore no metric equivalents are presented in this
specification.
1.21.3 The following hazard caveat pertains only to the test method portions, S 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 and health practices and determine the applicability of regulatory limitations
prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
D3951Practice for Commercial Packaging
E3Guide for Preparation of Metallographic Specimens
E112 Test Methods for Determining Average Grain Size E384Test Method for Knoop and Vickers Hardness of Materials
F606 TestMethodsforDeterminingtheMechanicalPropertiesofExternallyandInternallyThreadedFasteners,Washers,Direct
Tension Indicators, and Rivets
F788/F788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series
2.2 ASME Standards:
B1.1Unified Screw Threads 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
F1789 Terminology for F16 Mechanical Fasteners
F1940 Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners
F2282 Specification for Quality Assurance Requirements for Carbon and Alloy Steel Wire, Rods, and Bars for Mechanical
Fasteners
F2328 Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts,
Screws and Studs
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 Aug. 1, 2004. Published August 2004. Originally approved in 1967. Last previous edition approved in 2000 as A 574–00.on Steel Bolts, Nuts,
Rivets and Washers.
ϵ1
Current edition approved Dec. 1, 2008. Published January 2009. Originally approved in 1967. Last previous edition approved in 2004 as A574 – 04 . DOI:
10.1520/A0574-08.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-574 in Section II of that code.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. 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 ----------------------
A574 – 08
3
2.2 ASME Standards:
B18.3 Socket Cap, Shoulder, and Set Screws
B18.12 Glossary of Terms for Mechanical Fasteners
B18.24 Part Identifying Number (PIN) Code System Standard for B18 Fastener Products
2.3 Federal Standard:
H-28Handbook of Thread Dimensions
3. Terminology
3.1Definitions:
3.1.1Definitions of discontinuities covered by 10.2 follow:
3.1.2crack—clean crystalline break passing through the grain or grain boundary without inclusion of foreign elements.
3.1.3inclusions
...

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.
´1
Designation:A574–04 Designation: A 574 – 08
Standard Specification for
1
Alloy Steel Socket-Head Cap Screws
This standard is issued under the fixed designation A 574; 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
´ NOTE—Sections 2.2 and 4.2.8 were editorially revised in October 2006.
1. Scope*
1.1This 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.
1.1 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.
NOTE 1—A complete metric companion to Specification A 574 has been developed—A 574M; therefore no metric equivalents are presented in this
specification.
1.2The following hazard caveat pertains only to the test method portion, Section
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 and health practices and determine the applicability of regulatory limitations prior
to use.
2. Referenced Documents
2
2.1 ASTM Standards:
A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
D3951Practice for Commercial Packaging
E3Guide for Preparation of Metallographic Specimens
E112 Test Methods for Determining Average Grain Size E384Test Method for Microindentation Hardness of Materials
F 606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers,
Direct Tension Indicators, and Rivets
F 788/F 788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series
2.2 ASME Standards:
B1.1Unified Screw Threads Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series
F 1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
F 1789 Terminology for F16 Mechanical Fasteners
F 1940 Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners
F 2282 Specification for Quality Assurance Requirements for Carbon and Alloy Steel Wire, Rods, and Bars for Mechanical
Fasteners
F 2328 Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts,
Screws and Studs
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,Rivets and Washers.
Current edition approved Aug.Dec. 1, 2004.2008. Published August 2004.January 2009. Originally approved in 1967. Last previous edition approved in 20002004 as
´1
A 574 – 004 .
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-574 in Section II of that code.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. 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 ----------------------
A574–08
3
2.2 ASME Standards:
B18.3 Socket Cap, Shoulder, and Set Screws
B18.12 Glossary of Terms for Mechanical Fasteners
B18.24 Part Identifying Number (PIN) Code System Standard for B18 Fastener Products
2.3 Federal Standard:
H-28Handbook of Thread Dimensions
3. Terminology
3.1Definitions:
3.1.1Definitions of discontinuities covered by 10.2 follow:
3.1.2crack—clean crystalline break passing through the grain or grain boundary without inclusion of foreign elements.
3.1.3inclusions—particles of nonmetallic impurities, usually oxides, sulfides, silicates,
...