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 4140-00-518-2429
NSN 4140-00-279-3148
NSN 5990-01-334-8634
NSN 5895-01-199-1006
NSN 5999-01-384-8789
NSN 6320-01-399-6177
NSN 5975-00-789-6209
NSN 2925-01-147-6688
NSN 5945-01-016-7349
NSN 5930-01-090-4527
NSN 5915-01-050-8214
NSN 5960-00-973-7882