At One Click Purchasing, we are your reliable source for the NSN part 004020 manufactured by Puritan Bennett Corp. We carry a wide range of popular NSN items on our website, including Chart Recording Instrument like part number 004020 which is listed with the NSN 7530012334434 for easy identification. If you are interested in 004020 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.