ASTM A449-00
(Specification)Standard Specification for Quenched and Tempered Steel Bolts and Studs
Standard Specification for Quenched and Tempered Steel Bolts and Studs
SCOPE
1.1 This specification covers the chemical and mechanical requirements for two types of quenched and tempered steel bolts and studs for general applications where high strength is required.
1.2 The two types of bolts covered in this specification are:
1.2.1 Type 1 -Medium-carbon steel bolts and studs furnished in nominal diameters of 1/4 to 3 in., inclusive.
1.2.2 Type 2 -Low-carbon martensite or medium-carbon martensite steel bolts and studs furnished in nominal diameters of 1/4 to 1 in., inclusive.
1.3 The bolts and studs shall be Type 1; Type 2; or, Type 1 or 2 at manufacturer's option; as specified by the purchaser. When a type is not specified, Type 1 shall be furnished. When elevated temperature applications are involved, Type 1 shall be specified by the purchaser on the order.
1.4 Suitable nuts are covered in Specification A563. Unless otherwise specified, the grade and style of nut shall be as follows: Fastener Size and Surface Finish Nut Grade and Style A 1/4 to 1 1/2 in., plain (or with a B, hex coating of insufficient thickness to require over-tapped nuts) Over 1 1/2 to 3 in., plain (or with A, heavy hex a coating of insufficient thickness to require over-tapped nuts) 1/4 to 3 in., zinc-coated (or with DH, heavy hex a coating thickness requiring over-tapped nuts) A Nuts of other grades and styles having specified proof load stresses (Specification A 563, Table 3) greater than the specified grade and style of nut are suitable.
1.5 Unless otherwise specified, washers ordered with bolts shall be furnished to the requirements of Specification F436.
1.6 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
General Information
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Standards Content (Sample)
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Designation: A 449 – 00
Standard Specification for
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Quenched and Tempered Steel Bolts and Studs
This standard is issued under the fixed designation A 449; 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 * A 153 Specification for Zinc Coating (Hot-Dip) on Iron and
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2 Steel Hardware
1.1 This specification covers the chemical and mechanical
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A 563 Specification for Carbon and Alloy Steel Nuts
requirements for two types of quenched and tempered steel
A 751 Test Methods, Practices, and Terminology for
bolts and studs for general applications where high strength is
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Chemical Analysis of Steel Products
required.
B 695 Specification for Coatings of Zinc Mechanically
1.2 The two types of bolts covered in this specification are:
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Deposited on Iron and Steel
1.2.1 Type 1—Medium-carbon steel bolts and studs fur-
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D 3951 Practice for Commercial Packaging
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nished in nominal diameters of ⁄4 to 3 in., inclusive.
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F 436 Specification for Hardened Steel Washers
1.2.2 Type 2—Low-carbon martensite or medium-carbon
F 606 Test Methods for Determining the Mechanical Prop-
martensite steel bolts and studs furnished in nominal diameters
1 erties of Externally and Internally Threaded Fasteners,
of ⁄4to 1 in., inclusive.
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Washers, and Rivets
1.3 The bolts and studs shall be Type 1; Type 2; or, Type 1
F 788/F788M Specification for Surface Discontinuities of
or 2 at manufacturer’s option; as specified by the purchaser.
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Bolts, Screws, and Studs, Inch and Metric Series
When a type is not specified, Type 1 shall be furnished. When
2.2 ANSI/ASME Standards:
elevated temperature applications are involved, Type 1 shall be
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B 1.1 Unified Screw Threads
specified by the purchaser on the order.
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B 18.2.1 Square and Hex Bolts and Screws
1.4 Suitable nuts are covered in Specification A 563. Unless
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B 18.24.1 Part Identifying Number (PIN) Code System
otherwise specified, the grade and style of nut shall be as
2.3 Military Standard:
follows:
MIL-STD-105 Single Sampling Plan for Normal Inspec-
A
Fastener Size and Surface Finish Nut Grade and Style
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1 1 tion
⁄4 to 1 ⁄2 in., plain (or with a coating of insufficient B, hex
thickness to require over-tapped nuts)
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Over 1 ⁄2 to 3 in., plain (or with a coating of insuffi- A, heavy hex
3. Ordering Information
cient thickness to require over-tapped nuts)
1 3.1 Orders for bolts and studs (including nuts and accesso-
⁄4 to 3 in., zinc-coated (or with a coating thickness DH, heavy hex
requiring over-tapped nuts)
ries) under this specification shall include the following:
A
Nuts of other grades and styles having specified proof load stresses (Specifi-
3.1.1 ASTM designation and year of issue.
cation A 563, Table 3) greater than the specified grade and style of nut are suitable.
3.1.2 Type required, that is, Type 1; Type 2; or Type 1 or 2
1.5 Unless otherwise specified, washers ordered with bolts
at manufacturer’s option (see 1.3).
shall be furnished to the requirements of Specification F 436.
3.1.3 Name of product (that is, bolt or stud).
1.6 The values stated in inch-pound units are to be regarded
3.1.4 Quantities (number of pieces by size (including nuts).
as the standard. The values given in parentheses are provided
3.1.5 Bolt size and length.
for information purposes only.
2. Referenced Documents
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Annual Book of ASTM Standards, Vol 01.06.
2.1 ASTM Standards:
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Annual Book of ASTM Standards, Vol 01.08.
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Annual Book of ASTM Standards, Vol 01.03.
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Annual Book of ASTM Standards, Vol 02.05.
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This specification is under the jurisdiction of ASTM Committee F16 on Annual Book of ASTM Standards, Vol 15.09.
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Fastenersand is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Available from American National Standards Institute, 11 West 42nd Street,
Nuts, Rivets, and Washers. 13th Floor, New York, NY 10036.
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Current edition approved May 10, 2000. Published July 2000. Originally Available from American Society of Mechanical Engineers, Three Park
published as A 449 – 63 T. Last previous edition A 449 – 93. Avenue, New York, NY 10016–5990.
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For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from Standardization Documents Order Desk, Bldg. 4 Section D,
cations SA-449 in Section II of that Code. 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
*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.
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