SAE AS9572B
SAE AS9572B
SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, SILVER PLATED, CORROSION AND HEAT RESISTANT STEEL, UNS S66286, 130 KSI MIN, .1380-40 UNJF-3A
standard by SAE International, 12/27/2015