Part Number FSU 16 having (CAGE Code 1T765) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for FSU 16 Nut Assembly Retainer Ring by Robertson Fuel Systems Llc. 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.