Part Number HS4539M064Y having (CAGE Code 02731) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for HS4539M064Y Nut Self Locking Plate by Mcdonnell Douglas Helicopter Co. 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.