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 5920-01-523-1945
NSN 5965-00-285-0745
NSN 6145-01-154-7183
NSN 6130-01-599-4703
NSN 5975-01-342-6987
NSN 5965-01-269-1960
NSN 5925-01-257-3017
NSN 5950-01-480-4789
NSN 5950-01-360-5338
NSN 5975-00-577-3765
NSN 6650-01-187-9781
NSN 5925-01-426-6923