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.)
NSN 2925-00-767-4245
NSN 5925-01-021-9200
NSN 5895-01-415-1377
NSN 7035-01-320-2536
NSN 5998-01-013-8925
NSN 6685-01-011-0273
NSN 6650-01-425-7362
NSN 5999-00-484-1276
NSN 7035-01-227-2546
NSN 6650-00-901-1501
NSN 6135-01-300-7451
NSN 6145-01-521-3924