This specification covers premium quality bolts and screws made from a low-alloy, heat-resistant steel and having threads of UNJ (MIL-S-8879) form. This document is stabilized for use only in non-aerospace applications. FAA Advisory Notice 20-127 considers bolts made from H11 material to be unsafe for aircraft use and instructs that if used they should be replaced with a different material.


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    Title :

    Bolts and Screws, Steel, Low-Alloy Heat Resistant 222,000 psi (1517 MPa) Tensile Strength Hardened and Tempered, Roll Threaded


    Publication date :

    2017-08-17



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English