Prevailing torque all metal design locking feature
A nut, flat on top and bottom, having 12 flat sides. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance).
Classification: Nuts of iron or steel
NSN 5855-01-585-3005
NSN 5999-01-572-8387
NSN 6240-01-207-2120
NSN 6145-00-146-7408
NSN 6150-01-054-3983
NSN 7035-00-849-5526
NSN 5925-01-477-4717
NSN 5920-01-325-7118
NSN 5895-01-536-9616
NSN 5935-01-641-6605
NSN 5950-01-332-9937
NSN 5835-01-629-2044