At One Click Purchasing, we are your reliable source for the NSN part 521 327-428 manufactured by Butler Newall Inc. We carry a wide range of popular NSN items on our website, including Switch Rotary like part number 521 327-428 which is listed with the NSN 5930013182236 for easy identification. If you are interested in 521 327-428 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.