Part Number NS-3983 ITEM 4 1IN having (CAGE Code 11836) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for NS-3983 ITEM 4 1IN Nut Plain Round by National Oilwell Varco Inc. 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.