Part Number DF4300-4990 AY99 having (CAGE Code 43689) and FSC 5930 Switches in stock with ready to ship. Get an instant quote for DF4300-4990 AY99 Cover Electrical Switch 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.