• SAE AS9573D

    SCREW, MACHINE – DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, SILVER PLATED, CORROSION AND HEAT RESISTANT STEEL, UNS S66286, 130 KSI MIN, .1640-36 UNJF-3A
    standard by SAE International, 04/21/2023