Part Number 640-54PC78 having (CAGE Code 43689) and FSC 5340 Hardware, Commercial in stock with ready to ship. Get an instant quote for 640-54PC78 Seat Helical Compression Spring by Huntington Ingalls Incorporated. 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.