Part Number 57A23B31 having (CAGE Code 72825) and FSC 5960 Electron Tubes and Associated Hardware in stock with ready to ship. Get an instant quote for 57A23B31 Shield Electron Tube by Eby Holding Company 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.