At One Click Purchasing, we are your reliable source for the NSN part NB3-4 manufactured by Mcc Holdings Inc. We carry a wide range of popular NSN items on our website, including Seat Valve like part number NB3-4 which is listed with the NSN 4820001368642 for easy identification. If you are interested in NB3-4 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.