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 6610-01-363-9745
NSN 5998-00-349-8944
NSN 5925-01-488-6619
NSN 2925-00-026-0005
NSN 5960-00-073-9277
NSN 6240-00-235-5159
NSN 5920-01-066-6926
NSN 6105-01-281-6185
NSN 5905-01-256-8829
NSN 6220-01-627-5380
NSN 6145-00-435-4013
NSN 5945-00-244-1212