At One Click Purchasing, we are your reliable source for the NSN part 491B manufactured by Master Lock Company Llc. We carry a wide range of popular NSN items on our website, including Locking Device Circ like part number 491B which is listed with the NSN 5925015703236 for easy identification. If you are interested in 491B 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.