Part Number 57A00-216 having (CAGE Code 03927) and FSC 5960 Electron Tubes and Associated Hardware in stock with ready to ship. Get an instant quote for 57A00-216 Retainer Electron Tube by Safetran Systems Corp. 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.