Part Number 424D4 having (CAGE Code 00756) and FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings in stock with ready to ship. Get an instant quote for 424D4 Coupling Boss by Aerospace Industries. 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.