Part Number B18.3.2M SZ4 having (CAGE Code 80204) and FSC 5120 Hand Tools Nonedged Nonpowered in stock with ready to ship. Get an instant quote for B18.3.2M SZ4 Key Socket Head Screw by American National Standards Inst. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.