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ASTM
A307-12 Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength
Edition: 2012
$144.00
Unlimited Users per year
Description of ASTM-A307 2012
ASTM A307-12
Historical Standard: Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength
ASTM A307
Scope
1.1 This specification covers the chemical and mechanical requirements of two grades of carbon steel bolts and studs in
sizes 1/4 in. through 4 in. The fasteners are designated by “Grade” denoting tensile strength and intended use, as follows:
Grade
|
Description
|
|
|
Grade A
|
Bolts, studs, and threaded rod having a minimum tensile strength of 60 ksi and intended for general applications,
|
Grade B
|
Bolts, studs, and threaded rodA having a tensile strength of 60 to 100 ksi and intended for flanged joints in piping systems with cast iron flanges, and
|
Grade C
|
Replaced by Specification F1554 Gr.36
|
1.2 This specification does not cover requirements for machine screws, thread cutting/forming screws, mechanical expansion anchors or similar externally threaded fasteners.
1.3 Suitable nuts are covered in Specification A563. Unless otherwise specified, the grade and style of nut for each grade of fastener, of all surface finishes, shall be as follows:
Fastener Grade and Size
|
Nut Grade and StyleA
|
A 1/4 to 11/2 in.
|
A, hex
|
A over 11/2 to 4 in.
|
A, heavy hex
|
B, 1/4 to 4 in.
|
A, heavy hex
|
1.4 The values stated in inch-pound units are to be regarded as the standard.
1.5 Supplementary Requirement S1 of an optional nature is provided, which describes additional restrictions to be applied when bolts are to be welded. It shall apply only when specified in
the inquiry, order, and contract.
1.6 Terms used in this specification are defined in Terminology F1789 unless otherwise defined herein.
Keywords
all thread rod; bolts; carbon steel; steel; studs; threaded rod
ICS Code
ICS Number Code 21.060.10 (Bolts, screws, studs)
DOI: 10.1520/A0307-12
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25.120 | Chipless working equipment
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25.180 | Industrial furnaces
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25.220 | Surface treatment and coating
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