At One Click Purchasing, we are your reliable source for the NSN part 221A4MA manufactured by Jan Hardware Mfg Co Inc. We carry a wide range of popular NSN items on our website, including Knob like part number 221A4MA which is listed with the NSN 5355006194669 for easy identification. If you are interested in 221A4MA 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.