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ASTM A325-09a

Historical Revision

Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

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1.1 This specification covers two types of quenched and tempered steel heavy hex structural bolts having a minimum tensile strength of 120 ksi for sizes 1.0 in. and less and 105 ksi for sizes over 1.0 to 1½ in., inclusive.

1.2 The bolts are intended for use in structural connections. These connections are covered under the requirements of the Specification for Structural Joints Using ASTM A325 or A490 Bolts, approved by the Research Council on Structural Connections, endorsed by the American Institute of Steel Construction and by the Industrial Fastener Institute.

1.3 The bolts are furnished in sizes ½ to 1½ in., inclusive. They are designated by type, denoting chemical composition as follows:




Type Description
Type 1 Medium carbon, carbon boron, or medium carbon alloy steel.
Type 2 Withdrawn in November 1991.
Type 3 Weathering steel.

Note 1—Bolts for general applications, including anchor bolts, are covered by Specification A449. Also refer to Specification A449 for quenched and tempered steel bolts and studs with diameters greater than 1½ in. but with similar mechanical properties.

1.4 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.

Note 2—A complete metric companion to Specification A325 has been developedSpecification A325M; therefore, no metric equivalents are presented in this specification.

1.5 This specification is applicable to heavy hex structural bolts only. For bolts of other configurations and thread lengths with similar mechanical properties, see Specification A449.

1.6 Terms used in this specification are defined in Terminology F1789.

1.7 The following safety hazard caveat pertains only to the test methods portion, Section 10, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

This specification covers the chemical, mechanical, and dimensional requirements for two types of heavy hex structural bolts made of quenched and tempered steel that are intended for use in structural connections. These bolts are designated by type, denoting chemical composition, as follows: Type 1medium carbon, carbon boron, or medium carbon alloy steel; and Type 3weathering steel. The steel bolts shall undergo heat and product analysis for chemical composition measurements. The bolts shall also undergo test that shall examine their conformance to specified properties such as dimensions and thread fit, surface discontinuities, coating weight and thickness, hardness, tensile strength, yield strength, elongation, reduction of area, proof load, and rotational capacity.


SDO ASTM: ASTM International
Document Number A325
Publication Date Dec. 1, 2009
Language en - English
Page Count 8
Revision Level 09a
Supercedes
Committee F16.02
Publish Date Document Id Type View
Sept. 1, 2014 A0325-14 Revision
May 1, 2010 A0325-10E01 Revision
May 1, 2010 A0325-10 Revision
Dec. 1, 2009 A0325-09AE01 Revision
Dec. 1, 2009 A0325-09A Revision
Jan. 1, 2009 A0325-09 Revision
Dec. 1, 2007 A0325-07A Revision
Sept. 15, 2007 A0325-07 Revision
Aug. 1, 2006 A0325-06 Revision
Sept. 1, 2004 A0325-04B Revision
Aug. 1, 2004 A0325-04A Revision
Jan. 1, 2004 A0325-04 Revision
Jan. 10, 2002 A0325-02 Revision
Jan. 10, 2002 A0325-00 Revision
Not Available A0325-79 Revision