ASTM A574-16

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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Sep-2016
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.02 - Steel Bolts, Studs and Nuts

Relations

• Replaces: ASTM A574-13 - Standard Specification for Alloy Steel Socket-Head Cap Screws
• Effective Date: 01-Oct-2016
• Referred By: ASTM F1233-21 - Standard Test Method for Security Glazing Materials And Systems
• Effective Date: 01-Oct-2016
• Referred By: ASTM F3561-23 - Standard Test Method for Forced-Entry-Resistance of Fenestration Systems After Simulated Active Shooter Attack
• Effective Date: 01-Oct-2016
• 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-Oct-2016
• Referred By: ASTM F1510-21 - Standard Specification for Rotary Positive Displacement Pumps, Ships Use
• Effective Date: 01-Oct-2016
• Referred By: ASTM F2798-09(2023) - Standard Specification for Sealless Lube Oil Pump with Oil Through Motor for Marine Applications
• Effective Date: 01-Oct-2016
• Referred By: ASTM F1718-01(2019) - Standard Specification for Rotary Positive Displacement Distillate Fuel Pumps
• Effective Date: 01-Oct-2016
• Referred By: ASTM F1476-07(2019) - Standard Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications
• Effective Date: 01-Oct-2016
• Referred By: ASTM F541-12(2020) - Standard Specification for Alloy Steel Eyebolts
• Effective Date: 01-Oct-2016

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 −16
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.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* Carbon and Alloy Steel Wire, Rods, and Bars for Me-
chanical Fasteners
1.1 This specification covers the requirements for quenched
F2328Test Method for Determining Decarburization and
and tempered alloy steel hexagon socket-head cap screws,
Carburization in Hardened and Tempered Threaded Steel
0.060through4in.indiameterwherehighstrengthisrequired.
Bolts, Screws, Studs, and Nuts
1.2 Thevaluesstatedininch-poundunitsaretoberegarded 3
2.2 ASME Standards:
asstandard.Nootherunitsofmeasurementareincludedinthis
B18.3Socket Cap, Shoulder, and Set Screws
standard.
B18.12Glossary of Terms for Mechanical Fasteners
1.3 The following hazard caveat pertains only to the test
B18.24Part Identifying Number (PIN) Code System Stan-
method portions, sections 5.1, 5.6, 8, and 12, of this specifi-
dard for B18 Fastener Products
cation. This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.1 Definitions of Terms Specific to This Standard—The
priate safety and health practices and determine the applica-
definition of terms used in this specification shall be as
bility of regulatory limitations prior to use.
specified in Terminology F1789, ASME B18.12, or the appli-
cable referenced standards, unless otherwise defined herein. In
2. Referenced Documents
the event that there are differences for a given term, ASTM
2
2.1 ASTM Standards:
definitions shall be used.
A751Test Methods, Practices, and Terminology for Chemi-
4. Ordering Information
cal Analysis of Steel Products
E112Test Methods for Determining Average Grain Size
4.1 Orders for socket head cap screws under this specifica-
F606/F606MTest Methods for Determining the Mechanical
tion shall include the following information:
Properties of Externally and Internally Threaded
4.1.1 ASTM designation and year of issue.
Fasteners, Washers, Direct Tension Indicators, and Rivets
4.1.2 Name of the screw (SHCS).
F788Specification for Surface Discontinuities of Bolts,
4.1.3 Quantity (number of pieces by size).
Screws, and Studs, Inch and Metric Series
4.1.4 Dimensions, including nominal thread designation,
F1470Practice for Fastener Sampling for Specified Me-
thread pitch, and nominal screw length.
chanical Properties and Performance Inspection
4.2 Orders for socket head cap screws shall include the
F1789Terminology for F16 Mechanical Fasteners
following optional requirements if specified by the purchaser:
F1940Test Method for Process Control Verification to
4.2.1 Inspection at point of manufacture.
Prevent Hydrogen Embrittlement in Plated or Coated
4.2.2 Coating, if a protective finish other than those, which
Fasteners
are described in 5.5 is required, it must be specified (see 5.6).
F2282SpecificationforQualityAssuranceRequirementsfor
4.2.3 Test reports or certificate of conformance, as required
(see Section 15).
1 4.2.4 Additional testing (see 12.1).
This specification is under the jurisdiction of ASTM Committee F16 on
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts, 4.2.5 Special packaging (see 18.1.2).
Nuts, Rivets and Washers.
4.2.6 Supplementary requirements (see S1).
Current edition approved Oct. 1, 2016. Published November 2016. Originally
4.2.7 Special requirements.
approved in 1967. Last previous edition approved in 2013 as A574–13. DOI:
10.1520/A0574-16.
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 ----------------------
A574−16
4.2.8 For establishment of a part identifying system, see 5.6.1 When a protective finish other than as specified in 5.5
ASME B18.24. is required, it shall be specified on the purchase order with the
applicable finish specification.
5. Materials and Ma
...

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: A574 − 13 A574 − 16
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 U.S. Department of Defense.
1. 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 A574 has been developed—A574M; 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
E112 Test Methods for Determining Average Grain Size
F606F606/F606M Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners,
Washers, and Rivets (Metric) F0606_F0606M Direct Tension Indicators, and Rivets
F788/F788MF788 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, Studs, and Nuts
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
3. Terminology
3.1 Definitions of Terms Specific to This Standard—The definition of terms used in this specification shall be as specified in
Terminology F1789, ASME B18.12, or the applicable referenced standards, unless otherwise defined herein. In the event that there
are differences for a given term, ASTM definitions shall be used.
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 April 1, 2013Oct. 1, 2016. Published June 2013November 2016. Originally approved in 1967. Last previous edition approved in 20122013 as
A574 – 12.A574 – 13. DOI: 10.1520/A0574-13.10.1520/A0574-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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.
3
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
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 − 16
4. Ordering Information
4.1 Orders for socket head cap screws under this specification shall include the following information:
4.1.1 ASTM designation and year of issue.
4.1.2 Name of the screw (SHCS).
4.1.3 Quantity (number of pieces by size).
4.1.4 Dimensions, including nominal thread designation, thread pitch, and nominal screw length.
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 p
...