Part Number 6749294-428 Nut Dbl Hex Hd Self Lkg St in stock with ready to ship. Get an instant quote for Rolls Royce Allison part number 6749294-428 by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for 6749294-428. Our dedicated account manager will get back to you within 15 minutes.