ASTM A563/A563M-23
(Specification)Standard Specification for Carbon and Alloy Steel Nuts (Inch and Metric)
Standard Specification for Carbon and Alloy Steel Nuts (Inch and Metric)
ABSTRACT
This specification covers chemical and mechanical requirements for eight property classes of hex and hex-flange carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts. Materials shall be tested and the individual grades shall conform to specified values of material such as hardness and proof load, chemical, and mechanical requirements. Classes 8S3 and 10S3 nuts have atmospheric corrosion resistance and weathering characteristics comparable to those of the steels. The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition. When properly exposed to the atmosphere, these steels can be used bare (uncoated) for many applications.
SCOPE
1.1 This specification2 covers chemical, mechanical, and dimensional requirements for eleven grades of carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts.
Note 1: See Appendix X1 for guidance on suitable application of nut grades.
1.2 The requirements for any grade of nut may, at the supplier's option, and with notice to the purchaser, be fulfilled by furnishing nuts of one of the stronger grades specified herein unless such substitution is barred in the inquiry and purchase order.
1.3 Terms used in this specification are defined in Terminology F1789 unless otherwise defined herein.
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 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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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.
Designation: A563/A563M − 23
Standard Specification for
1
Carbon and Alloy Steel Nuts (Inch and Metric)
This standard is issued under the fixed designation A563/A563M; 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* A194/A194M Specification for Carbon Steel, Alloy Steel,
2
and Stainless Steel Nuts for Bolts for High Pressure or
1.1 This specification covers chemical, mechanical, and
High Temperature Service, or Both
dimensional requirements for eleven grades of carbon and
A307 Specification for Carbon Steel Bolts, Studs, and
alloy steel nuts for general structural and mechanical uses on
Threaded Rod 60 000 PSI Tensile Strength
bolts, studs, and other externally threaded parts.
A354 Specification for Quenched and Tempered Alloy Steel
NOTE 1—See Appendix X1 for guidance on suitable application of nut
Bolts, Studs, and Other Externally Threaded Fasteners
grades.
A394 Specification for Steel Transmission Tower Bolts,
1.2 The requirements for any grade of nut may, at the
Zinc-Coated and Bare
supplier’s option, and with notice to the purchaser, be fulfilled
A449 Specification for Hex Cap Screws, Bolts and Studs,
by furnishing nuts of one of the stronger grades specified
Steel, Heat Treated, 120/105/90 ksi Minimum Tensile
herein unless such substitution is barred in the inquiry and
Strength, General Use
purchase order.
A751 Test Methods and Practices for Chemical Analysis of
Steel Products
1.3 Terms used in this specification are defined in Termi-
B695 Specification for Coatings of Zinc Mechanically De-
nology F1789 unless otherwise defined herein.
posited on Iron and Steel
1.4 The values stated in either SI units or inch-pound units
F606/F606M Test Methods for Determining the Mechanical
are to be regarded separately as standard. The values stated in
Properties of Externally and Internally Threaded
each system are not necessarily exact equivalents; therefore, to
Fasteners, Washers, Direct Tension Indicators, and Rivets
ensure conformance with the standard, each system shall be
F812 Specification for Surface Discontinuities of Nuts, Inch
used independently of the other, and values from the two
and Metric Series
systems shall not be combined.
F1136/F1136M Specification for Zinc/Aluminum Corrosion
1.5 This international standard was developed in accor-
Protective Coatings for Fasteners
dance with internationally recognized principles on standard-
F1470 Practice for Fastener Sampling for Specified Me-
ization established in the Decision on Principles for the
chanical Properties and Performance Inspection
Development of International Standards, Guides and Recom-
F1554 Specification for Anchor Bolts, Steel, 36, 55, and
mendations issued by the World Trade Organization Technical
105-ksi Yield Strength
Barriers to Trade (TBT) Committee.
F1789 Terminology for F16 Mechanical Fasteners
F1941/F1941M Specification for Electrodeposited Coatings
2. Referenced Documents
on Mechanical Fasteners, Inch and Metric
3
F2329/F2329M Specification for Zinc Coating, Hot-Dip,
2.1 ASTM Standards:
Requirements for Application to Carbon and Alloy Steel
Bolts, Screws, Washers, Nuts, and Special Threaded
Fasteners
1
This specification is under the jurisdiction of ASTM Committee F16 on
F2833 Specification for Corrosion Protective Fastener Coat-
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
Studs and Nuts.
ings with Zinc Rich Base Coat and Aluminum Organic/
Current edition approved Dec. 1, 2023. Published January 2024. Originally
Inorganic Type
ɛ1
approved in 1966. Last previous edition approved in 2021 as A563/A563M – 21a .
F3019/F3019M Specification for Chromium Free Zinc-
DOI: 10.1520/A0563_A0563M-23.
2
Flake Composite, with or without Integral Lubricant,
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA – 563 in Section II of that Code.
Corrosion Protective Coatings for Fasteners
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
F3125/F3125M Specification for High Strength Structural
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Bolts and Assemblies, Steel and Alloy Steel, Heat Treated,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Inch Dimensions 120 ksi and 150 ksi Minimum Tensile
*A Summary of Changes section appears at the end of thi
...
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.
´1
Designation: A563/A563M − 21a A563/A563M − 23
Standard Specification for
1
Carbon and Alloy Steel Nuts (Inch and Metric)
This standard is issued under the fixed designation A563/A563M; 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
ε NOTE—Table 2 was editorially corrected in March 2022.
1. Scope*
2
1.1 This specification covers chemical and mechanicalchemical, mechanical, and dimensional requirements for eleven grades of
carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts.
NOTE 1—See Appendix X1 for guidance on suitable application of nut grades.
1.2 The requirements for any grade of nut may, at the supplier’s option, and with notice to the purchaser, be fulfilled by furnishing
nuts of one of the stronger grades specified herein unless such substitution is barred in the inquiry and purchase order.
1.3 Terms used in this specification are defined in Terminology F1789 unless otherwise defined herein.
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 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.
2. Referenced Documents
3
2.1 ASTM Standards:
A194/A194M Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High
Temperature Service, or Both
A307 Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength
A354 Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners
A394 Specification for Steel Transmission Tower Bolts, Zinc-Coated and Bare
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 WashersStuds and Nuts.
Current edition approved July 26, 2021Dec. 1, 2023. Published July 2021January 2024. Originally approved in 1966. Last previous edition approved in 2021 as
ɛ1
A563/A563M – 21.A563/A563M – 21a . DOI: 10.1520/A0563_A0563M-21AE01.10.1520/A0563_A0563M-23.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA – 563 in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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
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A563/A563M − 23
A449 Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength,
General Use
A751 Test Methods and Practices for Chemical Analysis of Steel Products
B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel
F606/F606M Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners,
Washers, Direct Tension Indicators, and Rivets
F812 Specification for Surface Discontinuities of Nuts, Inch and Metric Series
F1136/F1136M Specification for Zinc/Aluminum Corrosion Protective Coatings for Fasteners
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
F1941/F1941M Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric
F2329/F2329M Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Stee
...
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