ASTM A563-07a(2014)
(Specification)Standard Specification for Carbon and Alloy Steel Nuts
Standard Specification for Carbon and Alloy Steel Nuts
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 eight 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 Grades C3 and DH3 nuts have atmospheric corrosion resistance and weathering characteristics comparable to that of the steels covered in Specifications A242/A242M, A588/A588M, and A709/A709M. 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. Note 2—A complete metric companion to Specification A563 has been developed—A563M; therefore, no metric equivalents are presented in this specification.
1.4 Terms used in this specification are defined in Terminology F1789 unless otherwise defined herein.
General Information
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Standards Content (Sample)
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Contact ASTM International (www.astm.org) for the latest information
Designation:A563 −07a(Reapproved 2014)
Standard Specification for
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Carbon and Alloy Steel Nuts
This standard is issued under the fixed designation A563; 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* for Bolts for High Pressure or High Temperature Service,
2 or Both
1.1 This specification covers chemical and mechanical
A242/A242M Specification for High-Strength Low-Alloy
requirements for eight grades of carbon and alloy steel nuts for
Structural Steel
general structural and mechanical uses on bolts, studs, and
A307 Specification for Carbon Steel Bolts, Studs, and
other externally threaded parts.
Threaded Rod 60 000 PSI Tensile Strength
NOTE 1—See Appendix X1 for guidance on suitable application of nut
A325 Specification for Structural Bolts, Steel, Heat Treated,
grades.
120/105 ksi Minimum Tensile Strength
1.2 The requirements for any grade of nut may, at the
A354 Specification for Quenched and TemperedAlloy Steel
supplier’s option, and with notice to the purchaser, be fulfilled
Bolts, Studs, and Other Externally Threaded Fasteners
by furnishing nuts of one of the stronger grades specified
A394 Specification for Steel Transmission Tower Bolts,
herein unless such substitution is barred in the inquiry and
Zinc-Coated and Bare
purchase order.
A449 Specification for Hex Cap Screws, Bolts and Studs,
Steel, Heat Treated, 120/105/90 ksi Minimum Tensile
1.3 Grades C3 and DH3 nuts have atmospheric corrosion
Strength, General Use
resistance and weathering characteristics comparable to that of
A490 Specification for Structural Bolts, Alloy Steel, Heat
the steels covered in Specifications A242/A242M, A588/
Treated, 150 ksi Minimum Tensile Strength
A588M, and A709/A709M. The atmospheric corrosion resis-
A563M Specification for Carbon andAlloy Steel Nuts (Met-
tance of these steels is substantially better than that of carbon
ric)
steel with or without copper addition (see 5.2). When properly
A588/A588M Specification for High-Strength Low-Alloy
exposed to the atmosphere, these steels can be used bare
Structural Steel, up to 50 ksi [345 MPa] Minimum Yield
(uncoated) for many applications.
Point, with Atmospheric Corrosion Resistance
NOTE 2—Acomplete metric companion to Specification A563 has been
A687 Specification for High-Strength Nonheaded Steel
developed—A563M; therefore, no metric equivalents are presented in this
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Bolts and Studs (Withdrawn 1999)
specification.
A709/A709M Specification for Structural Steel for Bridges
1.4 Terms used in this specification are defined in Termi-
A751 Test Methods, Practices, and Terminology for Chemi-
nology F1789 unless otherwise defined herein.
cal Analysis of Steel Products
B695 Specification for Coatings of Zinc Mechanically De-
2. Referenced Documents
posited on Iron and Steel
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2.1 ASTM Standards: D3951 Practice for Commercial Packaging
F606 Test Methods for Determining the Mechanical Proper-
A194/A194M Specification for Carbon andAlloy Steel Nuts
ties of Externally and Internally Threaded Fasteners,
Washers, Direct Tension Indicators, and Rivets
F812/F812M Specification for Surface Discontinuities of
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This specification is under the jurisdiction of ASTM Committee F16 on
Nuts, Inch and Metric Series
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
Nuts, Rivets and Washers.
F1789 Terminology for F16 Mechanical Fasteners
Current edition approved April 1, 2014. Published May 2014. Originally
F2329 Specification for Zinc Coating, Hot-Dip, Require-
approved in 1966. Last previous edition approved in 2007 as A563 – 07a. DOI:
ments for Application to Carbon and Alloy Steel Bolts,
10.1520/A0563-07AR14.
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Screws, Washers, Nuts, and Special Threaded Fasteners
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA – 563 in Section II of that Code.
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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
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Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
*A Summary of Changes section appears at the end of this standard
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A563−07a (2014)
G101 Guide for Estimating the Atmospheric Corrosion Re- 4.7.3 When mechanically deposited is specified, the fasten-
sistance
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