ASTM A307

ASTM 材料标准

Designation: A 307– 00

Standard Speci cation for

Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength1 This standard is issued under the xed designation A 307; 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 speci cation2 covers the chemical and mechanical requirements of three grades of carbon steel bolts and studs in sizes 1 4in. (6.35 mm) through 4 in. (104 mm). The fasteners are designated by“Grade” denoting tensile strength and intended use, as follows: Grade Grade A Description Bolts and studs having a minimum tensile strength of 60 ksi (414 MPa) and intended for general applications, Bolts and studs having a tensile strength of 60 to 100 ksi (414 to 690 MPa) and intended for anged joints in piping systems with cast iron anges, and Nonheaded anchor bolts, either bent or straight, having properties conforming to Speci cation A 36 (tensile strength of 58 to 80 ksi (400 to 550 MPa)) and intended for structural anchorage purposes.

cation A 563, Table 3) greater than the speci ed grade and style of nut are also suitable.

1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 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 speci ed in the inquiry, order, and contract. 2. Referenced Documents 2.1 ASTM Standards: A 36/A 36M Speci cation for Carbon Structural Steel3 A 153 Speci cation for Zinc Coating (Hot-Dip) on Iron and Steel Hardware4 A 370 Test Methods and De nitions for Mechanical Testing of Steel Products5 A 563 Speci cation for Carbon and Alloy Steel Nuts6 A 706/A706M Speci cation for Low-Alloy Steel Deformed Bars for Concrete Reinforcement3 A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products5 B 695 Speci cation for Coatings of Zinc Mechanically Deposited on Iron and Steel7 D 3951 Practice for Commercial Packaging8 F 606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, and Rivets6 F 1470 Guide for Fastener Sampling for Speci ed Mechanical Properties and Performance Inspection6 2.2 ANSI/ASME Standards: B 1.1 Uni ed Screw Threads9 B 18.2.1 Square and Hex Bolts and Screws9

Grade B

Grade C

1.1.1 The term studs includes stud stock, sometimes referred to as threaded rod. 1.2 This speci cation does not cover requirements for machine screws, thread cutting/forming screws, mechanical expansion anchors or similar externally threaded fast

eners. 1.3 Suitable nuts are covered in Speci cation A 563. Unless otherwise speci ed, the grade and style of nut for each grade of fastener, of all surface nishes, shall be as follows: Fastener Grade and Size A, C, 1 4 to 11 2in. A, C, over 11 2 to 4 in. B, 1 4 to 4 in. A

Nut Grade and StyleA A, hex A, heavy hex A, heavy hex

Nuts of other grades and styles having speci ed proof load stresses (Speci-

This speci cation 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 May 10, 2000. Published July 2000. Originally published as A 307– 47 T. Last previous edition A 307– 97. 2 For ASME Boiler and Pressure Vessel Code applications see related Speci cation SA-307 in Section II of that Code.

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Annual Book of ASTM Standards, Vol 01.04. Annual Book of ASTM Standards, Vol 01.06. 5 Annual Book of ASTM Standards, Vol 01.03. 6 Annual Book of ASTM Standards, Vol 01.08. 7 Annual Book of ASTM Standards, Vol 02.05. 8 Annual Book of ASTM Standards, Vol 15.09. 9 Available from American National Standards Institute, 11 West 42nd St., 13th Floor, New York, NY 10036. 4

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*A Summary of Changes section appears at the end of this standard. Copyright© ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.

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