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    ASTM F1941M-07

    Standard Specification for Electrodeposited Coatings on Threaded Fasteners [Metric] (Withdrawn 2015)

    Withdrawn Standard: ASTM F1941M-07 | Developed by Subcommittee: F16.03

    WITHDRAWN, REPLACED BY F1941/F1941M


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    Withdrawn Rationale:

    This specification covers application, performance and dimensional requirements for electrodeposited coatings on threaded fasteners with metric screw threads. It specifies coating thickness, supplementary hexavalent chromate or trivalent chromite finishes, corrosion resistance, precautions for managing the risk of hydrogen embrittlement and hydrogen embrittlement relief for high-strength and surface-hardened fasteners. It also highlights the differences between barrel and rack plating and makes recommendations as to the applicability of each process.

    Formerly under the jurisdiction of Committee F16 on Fasteners, this specification was withdrawn in September 2015 and replaced by Specification F1941/F1941M on Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric.1

    1. Scope

    1.1 This specification covers application, performance and dimensional requirements for electrodeposited coatings on threaded fasteners with metric screw threads. It specifies coating thickness, supplementary hexavalent chromate or trivalent chromite finishes, corrosion resistance, precautions for managing the risk of hydrogen embrittlement and hydrogen embrittlement relief for high-strength and surface-hardened fasteners. It also highlights the differences between barrel and rack plating and makes recommendations as to the applicability of each process.

    1.2 The following precautionary statement pertains to the test method portion only, Section 9, 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

    B117 Practice for Operating Salt Spray (Fog) Apparatus

    B487 Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section

    B499 Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals

    B504 Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method

    B567 Test Method for Measurement of Coating Thickness by the Beta Backscatter Method

    B568 Test Method for Measurement of Coating Thickness by X-Ray Spectrometry

    B659 Guide for Measuring Thickness of Metallic and Inorganic Coatings

    D6492 Practice for Detection of Hexavalent Chromium On Zinc and Zinc/Aluminum Alloy Coated Steel

    E376 Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electromagnetic) Testing Methods

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

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

    F1624 Test Method for Measurement of Hydrogen Embrittlement Threshold in Steel by the Incremental Step Loading Technique

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

    ASME Standard

    B1.13M Metric Screw Threads - M Profile

    National Aerospace Standard (AIA)

    NASM-1312-5 Fast Test Method - Method 5: Stress Durability

    IFI Standard

    IFI-142 Hydrogen Embrittlement Risk Management


    Referencing This Standard

    DOI: 10.1520/F1941M-07

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM F1941M-07, Standard Specification for Electrodeposited Coatings on Threaded Fasteners [Metric] (Withdrawn 2015), ASTM International, West Conshohocken, PA, 2007, www.astm.org

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