ASTM WK76955

    Revision of A194 / A194M - 20a Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

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    Active Standard: A194 / A194M - 20a

    Developed by Subcommittee: A01.22 | Committee A01 | Contact Staff Manager



    bolting; chemical analysis; coated; marking on bolting components; nuts; plated;;


    There are circumstances that 4340 is used to create heavy hex nuts to improve charpy impact testing. This additional nickel content improves the quality of the product, but since it is not captured in A194, deviations to L43 are sometimes not permitted. The suggestion would be to allow the substitution of G7 nuts for L43 material nuts. In addition, develop a marking on the nut. Proposed marking to be L43.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Carlos Mora

    Draft Under Development