Part Number 991 4 02000 042 having (CAGE Code K4547) and FSC 5310 Nuts and Washers in stock with ready to ship. Get an instant quote for 991 4 02000 042 Washer Spring Tension by Siemens Air Traffic Management. 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.