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 5996-01-291-3076
NSN 6620-01-194-1081
NSN 5960-01-481-8051
NSN 5935-00-070-7449
NSN 5910-00-262-5313
NSN 6130-01-143-0751
NSN 6220-01-582-5308
NSN 5998-01-298-6398
NSN 5925-01-086-1441
NSN 5996-00-844-6227
NSN 6320-00-593-0379
NSN 5998-00-807-4486