At One Click Purchasing, we are your reliable source for the NSN part 1303 manufactured by United Air Filter Company. We carry a wide range of popular NSN items on our website, including Nut Plain Square like part number 1303 which is listed with the NSN 5310000131395 for easy identification. If you are interested in 1303 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.