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 6145-00-226-4468
NSN 5960-01-033-5071
NSN 6150-01-154-7263
NSN 5996-00-226-5364
NSN 6135-00-461-3590
NSN 5925-01-340-6961
NSN 6620-00-944-6446
NSN 5930-01-153-7266
NSN 6650-00-464-6395
NSN 6145-01-079-6834
NSN 6110-01-039-1151
NSN 5996-01-378-8532