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 5905-01-485-0234
NSN 5945-01-327-4646
NSN 5990-01-521-7890
NSN 6320-00-681-1324
NSN 6110-00-904-8925
NSN 2925-01-606-3201
NSN 7035-01-062-0184
NSN 5975-01-448-2998
NSN 5925-00-802-8626
NSN 6135-00-985-7887
NSN 5925-00-816-9929
NSN 6320-00-174-1362