SAE AS91691B
SAE AS91691B
BOLT, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, BLACK OXIDE, STEEL, UNS G87400, 125 KSI MIN .1900-32 UNF-3A (Stabilized: Jun 2015)
standard by SAE International, 06/16/2015