Diamond knurling; oem cage 3bfk5 (richard manno and co.)
No other part numbers with same form, fit, and function found.
A nut, round in shape, having all or part of its outer surface knurled. It may have provisions for external wrenching. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, round. (when height or thickness, and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance).
Classification: Nuts of iron or steel
NSN 6220-01-186-6431
NSN 6610-01-400-3880
NSN 5905-01-524-3132
NSN 5960-01-523-9098
NSN 5895-01-144-9563
NSN 5835-01-631-7390
NSN 5975-01-160-4742
NSN 5915-00-987-7165
NSN 6105-00-914-3775
NSN 5915-01-254-4458
NSN 5999-01-393-7203
NSN 5920-01-290-3298