At One Click Purchasing, we are your reliable source for the NSN part 645-004 manufactured by Kalamazoo Industries Inc. We carry a wide range of popular NSN items on our website, including Mechanical Stop like part number 645-004 which is listed with the NSN 5340016334611 for easy identification. If you are interested in 645-004 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.