Part Number 5S1 21 having (CAGE Code 71286) and FSC 5325 Fastening Devices in stock with ready to ship. Get an instant quote for 5S1 21 Stud Turnlock Fastener by Alcoa Global Fasteners 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.