At One Click Purchasing, we are your reliable source for the NSN part A440 manufactured by Mueller Brass Co. We carry a wide range of popular NSN items on our website, including Nut Tube Coupling like part number A440 which is listed with the NSN 4730001892729 for easy identification. If you are interested in A440 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.