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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 563M – 01
METRIC
Standard Specification for
Carbon and Alloy Steel Nuts [Metric]1
This standard is issued under the fixed designation A 563M; 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 (e) 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 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.
A 325M Specification for High-Strength Bolts for Structural Steel Joints [Metric]3
A 394 Specification for Steel Transmission Tower Bolts,
Zinc-Coated and Bare3
A 490M Specification for High-Strength Steel Bolts,
Classes 10.9 and 10.9.3, for Structural Steel Joints [Metric]3
A 588/A588M Specification for High-Strength Low-Alloy
Structural Steel with 50 ksi [345 MPa] Minimum Yield
Point to 4 in. [100 mm] Thick4
A 751 Test Methods, Practices, and Terminology for
Chemical Analysis of Steel Products5
B 695 Specification for Coatings of Zinc Mechanically
Deposited on Iron and Steel6
D 3951 Practice for Commercial Packaging7
F 606M Test Methods for Determining the Mechanical
Properties of Externally and Internally Threaded Fasteners,
Washers, and Rivets [Metric]3
F 812/F812M Specification for Surface Discontinuities of
Nuts, Inch and Metric Series3
G 101 Guide for Estimating the Atmospheric Corrosion
Resistance of Low-Alloy Steels8
2.2 ANSI Standards:9
B 1.13M Metric Screw Threads—M Profile
B 18.2.4.1M Metric Hex Nuts, Style 1
B 18.2.4.2M Metric Hex Nuts, Style 2
B 18.2.4.3M Metric Slotted Hex Nuts
B 18.2.4.4M Metric Hex Flange Nuts
B 18.2.4.5M Metric Hex Jam Nuts
B 18.2.4.6M Metric Heavy Hex Nuts
2.3 ISO Standards:9
ISO 898/II Mechanical Properties of Fasteners, Part II, Nuts
NOTE 1—Throughout this specification, the term class means property
class.
NOTE 2—Requirements for the four classes 5, 9, 10, and 12 are
essentially identical with requirements given for these classes in ISO
898/II. Requirements for Classes 8S and 10S are essentially identical with
requirements in an ISO 4775 Hexagon Nuts for High-Strength Structural
Bolting with Large Width Across Flats, Product Grade B, Property Classes
8 and 10. Classes 8S3 and 10S3 are not recognized in ISO standards.
1.2 Classes 8S3 and 10S3 nuts have atmospheric corrosion
resistance and weathering characteristics comparable to those
of the steels covered in Specification A 588/A 588M. The
atmospheric corrosion resistance of these steels is substantially
better than that of carbon steel with or without copper addition
(see 5.2). When properly exposed to the atmosphere, these
steels can be used bare (uncoated) for many applications.
1.3 The nut size range for which each class is applicable is
given in the table on mechanical requirements.
1.4 Appendix X1 gives guidance to assist designers and
purchasers in the selection of a suitable class.
1.5 Appendix X2 gives data on the properties of slotted hex
nuts and hex jam nuts.
NOTE 3—This specification is the metric companion of Specification
A 563.
2. Referenced Documents
2.1 ASTM Standards:
A 153 Specification for Zinc Coating (Hot-Dip) on Iron and
Steel Hardware2
3
Annual Book of ASTM Standards, Vol 01.08.
Annual Book of ASTM Standards, Vol 01.04.
5
Annual Book of ASTM Standards, Vol 01.03.
6
Annual Book of ASTM Standards, Vol 02.05.
7
Annual Book of ASTM Standards, Vol 15.09.
8
Annual Book of ASTM Standards, Vol 03.02.
9
Available from American National Standards Institute, 11 West 42nd St., 13th
Floor, New York, NY 10036.
4
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 Oct. 10, 2001. Published December 2001. Originally
published as A 563M – 80. Last previous edition A 563M – 00.
2
Annual Book of ASTM Standards, Vol 01.06.
*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
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
A 563M
hot-dip, mechanically deposited, or no preference.