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 5945-01-363-6917
NSN 4140-01-074-7155
NSN 7035-00-193-2269
NSN 6130-00-902-5692
NSN 6110-00-525-3418
NSN 6620-00-168-0308
NSN 5915-01-595-2266
NSN 6320-01-411-1353
NSN 5920-01-361-8835
NSN 6135-00-145-8884
NSN 5999-01-626-4403
NSN 5835-01-222-2437