5360-01-246-7145 (NMP-1128PC10(18-29))
5360-01-246-7145 is equivalent to manufacture part number 1221. 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.