Part Number 20ACIER1MM having (CAGE Code F0368) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for 20ACIER1MM Washer Flat by Manufacturers Standardization So. 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.