ASTM A574M-11

Standard Specification for Alloy Steel Socket-Head Cap Screws [Metric]

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, 1.6 mm through 48 mm in diameter having a minimum ultimate tensile strength of 1220 MPa.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
Note 1—This specification is the metric companion of Specification A574.  
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-Apr-2011
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.02 - Steel Bolts, Studs and Nuts

Relations

• Replaces: ASTM A574M-08 - Standard Specification for Alloy Steel Socket-Head Cap Screws [Metric]
• Effective Date: 01-May-2011
• Replaced By: ASTM A574M-12 - Standard Specification for Alloy Steel Socket-Head Cap Screws (Metric) (Withdrawn 2015)
• Effective Date: 01-Apr-2012
• Referred By: ASTM F2328M-17(2022) - Standard Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws, Studs, and Nuts (Metric)
• Effective Date: 01-May-2011

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A574M – 11
Standard Specification for
1
Alloy Steel Socket-Head Cap Screws [Metric]
This standard is issued under the fixed designation A574M; 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, 1.6
F2282 Specification for Quality Assurance Requirements
mm through 48 mm in diameter having a minimum ultimate
for Carbon and Alloy Steel Wire, Rods, and Bars for
tensile strength of 1220 MPa.
Mechanical Fasteners
1.2 The values stated in SI units are to be regarded as
F2328M Test Method for Determining Decarburization and
standard. No other units of measurement are included in this
Carburization in Hardened and Tempered Threaded Steel
standard.
Bolts, Screws and Studs (Metric)
NOTE 1—This specification is the metric companion of Specification 3
2.2 ASME Standards:
A574.
B18.3.1M Metric Socket Head Cap 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
3. Terminology
responsibility of the user of this standard to establish appro-
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
4. Ordering Information
E112 Test Methods for Determining Average Grain Size
F606M Test Methods for Determining the Mechanical
4.1 Orders for socket head cap screws under this specifica-
Properties of Externally and InternallyThreaded Fasteners,
tion shall include the following information:
Washers, and Rivets (Metric)
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 (millimeters).
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.
1
This specification is under the jurisdiction of ASTM Committee F16 on
4.2.2 Coating, if a protective finish other than those, which
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
are described in 5.5, is required, it must be specified (see 5.6).
Nuts, Rivets and Washers.
4.2.3 Certified test reports, as required (see Section 15).
Current edition approved May 1, 2011. Published May 2011. Originally
approved in 1980. Last previous edition approved in 2004 as A574M – 08. DOI:
4.2.4 Additional testing (see 12.1).
10.1520/A0574M-11.
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

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A574M – 11
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 requirements
4.2.7 Special requirements. to mi
...

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:A574M–08 Designation: A574M – 11
Standard Specification for
1
Alloy Steel Socket-Head Cap Screws [Metric]
This standard is issued under the fixed designation A574M; 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*
1.1 This specification covers the requirements for quenched and tempered alloy steel hexagon socket-head cap screws, 1.6 mm
through 48 mm in diameter having a minimum ultimate tensile strength of 1220 MPa.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
NOTE 1—This specification is the metric companion of Specification A574.
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
F606M TestMethodsforDeterminingtheMechanicalPropertiesofExternallyandInternallyThreadedFasteners,Washers,and
Rivets (Metric)
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
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
F2328M Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts,
Screws and Studs (Metric)
3
2.2 ASME Standards:
B18.3.1M Metric Socket Head Cap 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.
´1
Current edition approved Dec. 1, 2008. Published January 2009. Originally approved in 1980. Last previous edition approved in 2004 as A574M–04 . DOI:
10.1520/A0574M-08.
Current edition approved May 1, 2011. Published May 2011. Originally approved in 1980. Last previous edition approved in 2004 as A574M – 08. DOI:
10.1520/A0574M-11.
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.
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 ----------------------
A574M – 11
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 (millimeters).
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
...