Part Number 991-4-00188-004 having (CAGE Code K0677) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for 991-4-00188-004 Washer Flat by Plessey Co Ltd. 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.