ASTM A563/A563M-21a

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 and mechanical 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.

General Information

• Status: Historical
• Publication Date: 25-Jul-2021
• ICS: 21.060.20 - Nuts
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.02 - Steel Bolts, Studs and Nuts

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:A563/A563M −21a
Standard Specification for
1
Carbon and Alloy Steel Nuts (Inch and Metric)
This standard is issued under the fixed designationA563/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.
NOTE—Corrections were made to Table 1 and throughout the standard. The year date was changed on July 26, 2021
1. Scope* 2. Referenced Documents
2 3
1.1 This specification covers chemical and mechanical 2.1 ASTM Standards:
A194/A194M Specification for Carbon Steel, Alloy Steel,
requirements for eleven grades of carbon and alloy steel nuts
for general structural and mechanical uses on bolts, studs, and and Stainless Steel Nuts for Bolts for High Pressure or
High Temperature Service, or Both
other externally threaded parts.
A307 Specification for Carbon Steel Bolts, Studs, and
NOTE 1—See Appendix X1 for guidance on suitable application of nut
Threaded Rod 60 000 PSI Tensile Strength
grades.
A354 Specification for Quenched and TemperedAlloy Steel
1.2 The requirements for any grade of nut may, at the
Bolts, Studs, and Other Externally Threaded Fasteners
supplier’s option, and with notice to the purchaser, be fulfilled
A394 Specification for Steel Transmission Tower Bolts,
by furnishing nuts of one of the stronger grades specified
Zinc-Coated and Bare
herein unless such substitution is barred in the inquiry and
A449 Specification for Hex Cap Screws, Bolts and Studs,
purchase order.
Steel, Heat Treated, 120/105/90 ksi Minimum Tensile
1.3 Terms used in this specification are defined in Termi-
Strength, General Use
nology F1789 unless otherwise defined herein.
A751 Test Methods and Practices for Chemical Analysis of
Steel Products
1.4 The values stated in either SI units or inch-pound units
B695 Specification for Coatings of Zinc Mechanically De-
are to be regarded separately as standard. The values stated in
posited on Iron and Steel
each system are not necessarily exact equivalents; therefore, to
F606/F606M Test Methods for Determining the Mechanical
ensure conformance with the standard, each system shall be
Properties of Externally and Internally Threaded
used independently of the other, and values from the two
Fasteners, Washers, Direct Tension Indicators, and Rivets
systems shall not be combined.
F812 Specification for Surface Discontinuities of Nuts, Inch
1.5 This international standard was developed in accor-
and Metric Series
dance with internationally recognized principles on standard-
F1136/F1136M Specification for Zinc/Aluminum Corrosion
ization established in the Decision on Principles for the
Protective Coatings for Fasteners
Development of International Standards, Guides and Recom-
F1470 Practice for Fastener Sampling for Specified Me-
mendations issued by the World Trade Organization Technical
chanical Properties and Performance Inspection
Barriers to Trade (TBT) Committee.
F1554 Specification for Anchor Bolts, Steel, 36, 55, and
105-ksi Yield Strength
F1789 Terminology for F16 Mechanical Fasteners
1
This specification is under the jurisdiction of ASTM Committee F16 on
F1941/F1941M Specification for Electrodeposited Coatings
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
on Mechanical Fasteners, Inch and Metric
Nuts, Rivets and Washers.
Current edition approved July 26, 2021. Published July 2021. Originally
3
approved in 1966. Last previous edition approved in 2021 as A563/A563M – 21. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/A0563_A0563M-21A. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Standards volume information, refer to the standard’s Document Summary page on
cation SA – 563 in Section II of that Code. 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−21a
F2329/F2329M Specification for Zinc Coating, Hot-Dip, 4.2 Manufacturing Method:
Requirements for Application to Carbon and Alloy Steel
4.2.1 Nutsmaybemadecoldorhotbyforming,pressing,or
Bolts, Screws, Washers, Nuts, and Special Threaded
punching or may be machined from bar stock.
Fasteners
4.2.2 Threads shall be formed by tapping or machining.
F2833 Specification for Corrosion Protective Fastener Coat-
4.3 Heat Treatment:
ings with Zinc Rich Base Coat and Aluminum
...

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: A563/A563M − 21 A563/A563M − 21a
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.
NOTE—Corrections were made to Table 1 and throughout the standard. The year date was changed on July 26, 2021
1. Scope*
2
1.1 This specification covers chemical and mechanical 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 Washers.
Current edition approved June 15, 2021July 26, 2021. Published July 2021. Originally approved in 1966. Last previous edition approved in 20152021 as
A563 – 15.A563/A563M – 21. DOI: 10.1520/A0563_A0563M-21.10.1520/A0563_A0563M-21A.
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 [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 ----------------------
A563/A563M − 21a
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 Steel Bolts, Screws,
Washe
...