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ASTM A 563M Document Information:
Title
Standard Specification for Carbon and Alloy Steel Nuts [Metric]
ASTM International
Publication Date:
Dec 1, 2007
Scope:
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.
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 LargeWidth Across Flats,
Product Grade B, Property Classes 8 and 10. Classes 8S3 and 10S3
are not recognized in ISO standards.
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.
The nut size range for which each class is applicable is given
in the table on mechanical requirements.
Appendix X1 gives guidance to assist designers and purchasers in
the selection of a suitable class.
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.
Terms used in this specification are defined in Terminology F
1789 unless otherwise defined herein.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- alloy steel
- carbon steel
- metric
- nuts
- steel
- weathering steel
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