SAE AS9573B
SAE AS9573B
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, 01/09/2016