BOLT, MACHINE - DOUBLE HEX, EXTENDED WASHER HD, PD SHANK, CUP WASHER LOCKED, CADMIUM PLATED, STEEL, UNS G87400, 125 KSI MIN, .2500-28 UNJF-3A AS9681B – available for purchase at $63.00. Find the right standards and certifications for your needs with SAE.