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: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6145-00-984-6263
NSN 6320-00-557-3079
NSN 5996-00-059-7061
NSN 5895-01-302-2709
NSN 5945-01-360-5251
NSN 5990-00-901-1358
NSN 6645-01-488-5466
NSN 6650-01-327-7826
NSN 5920-01-512-6317
NSN 5905-01-297-3434
NSN 5855-00-256-5562
NSN 6645-01-525-7493