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 5960-00-188-8648
NSN 5920-01-108-0062
NSN 5960-01-526-1463
NSN 5925-01-108-8156
NSN 6110-00-294-3631
NSN 6645-00-542-1206
NSN 5855-01-525-7169
NSN 6135-00-196-5267
NSN 6320-00-790-4844
NSN 4140-00-024-0186
NSN 6610-00-993-5601
NSN 5835-01-297-1909