AS3159B -- BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, CLOSE TOLERANCE SHANK, TI ALLOY, UNS R56400, 160 KSI MIN .3750-24, UNJF-3A
SAE InternationalBOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, CLOSE TOLERANCE SHANK, TI ALLOY, UNS R56400, 160 KSI MIN .3750-24, UNJF-3AAS3159B