Part Number 90-6100-51480 having (CAGE Code 12285) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for 90-6100-51480 Nut Plain Hexagon by Cincinnati Gear Co The. 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.