At One Click Purchasing, we are your reliable source for the NSN part BS1806-A manufactured by British Standards Institution. We carry a wide range of popular NSN items on our website, including O Ring like part number BS1806-A which is listed with the NSN 5331998194949 for easy identification. If you are interested in BS1806-A 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.