Part Number 21AX96 having (CAGE Code 90743) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for 21AX96 Nut Self Locking Single Ball Sea by Mack Trucks Inc. 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.