5360-12-316-5185 (053 00 22 5500530022)
5360-12-316-5185 is equivalent to manufacture part number 550. It is a compression helical spring and is classified under Federal Supply Class 5360 (5360 - Springs), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 5360 - Springs and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.