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 6135-01-305-6958
NSN 5895-00-246-4415
NSN 6145-01-246-1080
NSN 6145-01-012-2098
NSN 5895-01-162-2299
NSN 6320-00-521-9350
NSN 5835-01-432-8801
NSN 2925-01-415-0264
NSN 6135-00-519-1325
NSN 5835-00-128-8762
NSN 6110-01-494-8954
NSN 7035-00-870-0290