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 4140-01-178-4585
NSN 5855-00-004-0904
NSN 6145-01-540-2738
NSN 5960-01-358-9733
NSN 5905-01-522-7054
NSN 5975-00-959-3606
NSN 6685-01-222-0141
NSN 5975-00-155-7065
NSN 6145-01-391-6199
NSN 5945-00-456-0275
NSN 5990-00-931-6304
NSN 5990-00-005-5215