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 5965-01-349-9029
NSN 5998-01-525-2062
NSN 6130-01-237-3295
NSN 6645-00-152-8498
NSN 5999-01-600-5832
NSN 6320-01-455-3394
NSN 5965-00-170-5254
NSN 5999-01-463-3026
NSN 5930-01-122-7595
NSN 5935-01-123-4699
NSN 5910-01-446-5903
NSN 2925-01-580-8072