A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. 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 6650-00-803-2754
NSN 6130-00-487-4638
NSN 6135-00-242-9531
NSN 6145-01-641-5055
NSN 6220-01-170-0694
NSN 5920-01-011-9378
NSN 7035-00-981-7216
NSN 6320-01-379-1182
NSN 7035-00-009-0099
NSN 6110-00-855-5695
NSN 5999-00-985-0876
NSN 6650-01-575-1044