At One Click Purchasing, we are your reliable source for the NSN part 135-O-1 manufactured by Altek Industries Corp. We carry a wide range of popular NSN items on our website, including Millivolt Source like part number 135-O-1 which is listed with the NSN 6660012105073 for easy identification. If you are interested in 135-O-1 item, then take the advantage of our online RFQ service, or peruse our website as you see fit to find other items of interest that you may wish to learn more about.