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 5920-01-361-8835
NSN 5999-01-043-6033
NSN 5996-01-585-7136
NSN 5895-01-572-8746
NSN 5835-01-205-6614
NSN 5925-00-140-2359
NSN 5905-01-580-1712
NSN 5930-00-588-2031
NSN 6620-01-100-8899
NSN 5910-00-945-7959
NSN 6145-01-055-5067
NSN 6650-01-381-2972