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 5965-01-233-8607
NSN 5905-01-461-7995
NSN 6135-01-334-3935
NSN 5945-01-606-4836
NSN 7035-00-517-8232
NSN 5935-01-374-5515
NSN 5905-01-109-8295
NSN 5960-00-483-6074
NSN 6220-01-492-5018
NSN 6110-01-258-4300
NSN 2925-01-172-6757
NSN 5910-01-219-3930