A nut, flat on top and bottom, having 4 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 5998-00-661-0380
NSN 6620-00-237-9395
NSN 6320-01-384-3850
NSN 5855-01-472-4519
NSN 6650-01-604-9073
NSN 5960-01-142-1995
NSN 6130-00-482-1257
NSN 4140-01-127-6112
NSN 5835-01-242-9806
NSN 5990-00-702-2873
NSN 6220-01-474-1863
NSN 6240-01-459-9086