Part Number 42049 having (CAGE Code 93706) and FSC 5365 Bushings, Rings, Shims, and Spacers in stock with ready to ship. Get an instant quote for 42049 Ring Externally Threaded by Recon Optical 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.