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 6130-00-740-3884
NSN 5920-01-436-0750
NSN 5975-01-218-4407
NSN 2925-01-159-8312
NSN 6685-01-526-8949
NSN 5998-00-871-8325
NSN 6240-00-725-2268
NSN 7035-01-028-4966
NSN 6145-01-485-3157
NSN 5925-01-076-4458
NSN 6645-00-434-8793
NSN 5910-01-032-1960