Alloy Steel AISI 4130 Dock Washer, DIN 1.7218 Threaded Stud, ASTM A193 Alloy Steel AISI 4130 Ogee Washer, UNS G41300 Lock Nut, Alloy Steel AISI 4130 Bolted Joints, ASME SA193 AISI 4130 Alloy Steel Bolts and Screws, AISI 4130 Alloy Bolts.