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 6650-00-950-4107
NSN 5910-01-287-9194
NSN 6145-00-926-3456
NSN 2925-01-633-0225
NSN 5930-01-381-2523
NSN 6645-00-359-5463
NSN 6130-00-905-8701
NSN 7035-00-064-7008
NSN 7035-00-849-5526
NSN 6130-00-837-7575
NSN 5998-01-265-7077
NSN 7035-01-539-7074