5360-01-229-7831 (F0R 515-S-N 3-EX3 528F0R515SN3EX3)
5360-01-229-7831 is equivalent to manufacture part number 528. 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.