At One Click Purchasing, we are your reliable source for the NSN part 2977 manufactured by Photo Research Inc. We carry a wide range of popular NSN items on our website, including Knob like part number 2977 which is listed with the NSN 5355013360963 for easy identification. If you are interested in 2977 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.