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 5960-00-166-7681
NSN 6145-00-267-9617
NSN 6610-00-313-0660
NSN 6320-00-894-1644
NSN 5930-00-125-7073
NSN 5835-01-096-8570
NSN 5935-01-578-7306
NSN 4140-01-407-9668
NSN 2925-00-925-0545
NSN 5905-00-506-2008
NSN 5945-01-220-7380
NSN 6320-01-054-3046