Part Number 268-3 having (CAGE Code 96606) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for 268-3 Nut Plain Castellated Hexagon by American Coleman Company 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.