ASTM A490-08

    Historical Standard: ASTM A490-08 Standard Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength

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    ASTM A490

    1. Scope

    1.1 This specification covers two types of quenched and tempered, alloy steel, heavy hex structural bolts having a tensile strength of 150 to 173 ksi.

    1.2 These bolts are intended for use in structural connections. These connections are covered under the requirements of the Specification for Structural Joints Using Specification A 325 or A 490 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 1½in., inclusive. They are designated by type denoting chemical composition as follows:

    TypeDescription
    Type 1Medium carbon alloy steel
    Type 2Withdrawn in 2002
    Type 3Weathering steel

    1.4 This specification provides that heavy hex structural bolts shall be furnished unless other dimensional requirements are specified on the purchase order.

    1.5 Terms used in this specification are defined in Terminology F 1789 unless otherwise defined herein.

    1.6 For metric bolts, see Specification A 490M Classes 10.9 and 10.9.3

    1.7 The following safety hazards caveat pertains only to the Test Methods portion, Section 12 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A194/A194M Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

    A325 Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

    A354 Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners

    A490M Specification for High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for Structural Steel Joints (Metric)

    A563 Specification for Carbon and Alloy Steel Nuts

    A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

    D3951 Practice for Commercial Packaging

    E384 Test Method for Knoop and Vickers Hardness of Materials

    E709 Guide for Magnetic Particle Testing

    E1444 Practice for Magnetic Particle Testing

    F436 Specification for Hardened Steel Washers

    F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets

    F788/F788M Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series

    F959 Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners

    F1136 Specification for Zinc/Aluminum Corrosion Protective Coatings for Fasteners

    F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection

    F1789 Terminology for F16 Mechanical Fasteners

    F2328 Test Method for Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws and Studs

    F2833 Specification for Corrosion Protective Fastener Coatings with Zinc Rich Base Coat and Aluminum Organic/Inorganic Type

    G101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels

    ASME Standards

    B18.24 Part Identification Number (PIN) Code System Standard for B18 Fastener Products

    IFI Standard

    IFI144 Test Evaluation Procedures for Coating Qualification Intended for Use on High-Strength Bolts


    ICS Code

    ICS Number Code 21.060.10 (Bolts, screws, studs)

    UNSPSC Code

    UNSPSC Code 31161614(Structural bolts)


    DOI: 10.1520/A0490-08

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