ASTM F912 - 11(2017)

    Standard Specification for Alloy Steel Socket Set Screws

    Active Standard ASTM F912 | Developed by Subcommittee: F16.02

    Book of Standards Volume: 01.08


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    Abstract

    This specification covers the requirements and corresponding test methods for quenched and tempered alloy steel socket set screws (SSS) having sizes of M1.6 through M24, hardnesses of 45 to 53 HRC, and belonging to ISO 898/5 property class 45H. These set screws are intended for compression applications only and are not customarily subjected to embrittlement tests. The screws shall be fabricated to a fine grain practice in standard surface finishes, and optional protective coating as specified in the purchase order. Sampled specimens shall undergo heat and product analysis for measurements of the chemical content for carbon, phosphorus, and sulfur. Appropriate tests shall also be performed to analyze the conformance of the screws to mechanical and other property requirements such as torque and torsional strength, microhardness, decarburization, and surface discontinuities.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers the requirements for quenched and tempered alloy steel socket-set screws (SSS) in nominal diameters 0.060 through 2 in. having hardnesses 45 to 53 HRC.

    1.2 These set screws are intended for compression applications only and are not customarily subjected to embrittlement tests. For tensile applications, consult with the manufacturer for proper alloy and hardness.

    1.3 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 F912 has been developed—F912M; therefore, no metric equivalents are shown in this Specification.

    1.4 The hazard statement pertains only to the test method section, Section 11 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.

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    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

    E3 Guide for Preparation of Metallographic Specimens

    E112 Test Methods for Determining Average Grain Size

    E384 Test Method for Knoop and Vickers Hardness of Materials

    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

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

    ASME Standards

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


    ICS Code

    ICS Number Code 21.060.10 (Bolts, screws, studs)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/F0912-11R17

    Citation Format

    ASTM F912-11(2017), Standard Specification for Alloy Steel Socket Set Screws, ASTM International, West Conshohocken, PA, 2017, www.astm.org

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