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 6135-01-463-2445
NSN 5935-01-510-7576
NSN 5930-01-563-1799
NSN 5996-01-386-4230
NSN 6150-01-587-8693
NSN 5998-01-056-5268
NSN 6650-01-494-6338
NSN 6620-01-181-1757
NSN 5965-00-391-0562
NSN 5925-01-087-5838
NSN 5930-01-175-6088
NSN 5999-00-149-0624