Part Number QKK4 2 having (CAGE Code 54X10) and FSC 5960 Electron Tubes and Associated Hardware in stock with ready to ship. Get an instant quote for QKK4 2 Electron Tube by Raytheon Co. 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.