ASTM A574-08

    Standard Specification for Alloy Steel Socket-Head Cap Screws


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    1. Scope

    1.1 This specification covers the requirements for quenched and tempered alloy steel hexagon socket-head cap screws, 0.060 through 4 in. in diameter where high strength is required.

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

    Note 1—A complete metric companion to Specification A 574 has been developedA 574M; therefore no metric equivalents are presented in this specification.

    1.3 The following hazard caveat pertains only to the test method portions, sections 5.1, 5.6, 8, and 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

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

    E112 Test Methods for Determining Average Grain Size

    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

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

    F1789 Terminology for F16 Mechanical Fasteners

    F1940 Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners

    F2282 Specification for Quality Assurance Requirements for Carbon and Alloy Steel Wire, Rods, and Bars for Mechanical Fasteners

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


    ICS Code

    ICS Number Code 21.060.10 (Bolts, screws, studs)

    UNSPSC Code

    UNSPSC Code 31161501(Cap screws)


    Referencing This Standard

    DOI: 10.1520/A0574-08

    ASTM International is a member of CrossRef.


    Citation Format

    ASTM A574-08, Standard Specification for Alloy Steel Socket-Head Cap Screws, ASTM International, West Conshohocken, PA, 2008, www.astm.org

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