Part Number 645 3791 PC5 having (CAGE Code 43689) and FSC 4720 Hose and Flexible Tubing in stock with ready to ship. Get an instant quote for 645 3791 PC5 Hose Assembly Metallic 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.