Part Number B18.21.1 3 8 IN having (CAGE Code 05047) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for B18.21.1 3 8 IN Washer Lock by American Society For. 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.