RFQ (621/146/18) STUD BOLT DIAMETER 5/8" X110 MM ASME B1.1 A193 GR.B7 C/W 2NUT A194 GR-2H AND 2 WASHER 2976 pcs. STUD BOLT DIAMETER 3/4" X120 MM ASME B1.1 A193 GR.B7 C/W 2NUT A194 GR-2H AND 2 WASHER 4932 pcs. RFQ(618/246/18) stud bolt carbon steel C/With 2 nut 5/8" X4 1/4" ANSI B1.1 /Astm A193 1000 pcs. stud bolt carbon steel C/With 2 nut 3/4" X4 1/2" ANSI B1.1 /Astm A193 1500 pcs.