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 6240-01-025-5847
NSN 6130-01-136-4429
NSN 6320-00-098-2858
NSN 6685-01-651-4435
NSN 6105-01-445-2763
NSN 6135-01-074-2529
NSN 5855-00-149-0766
NSN 7035-00-908-4933
NSN 6645-00-246-4934
NSN 5965-00-309-4814
NSN 4140-00-557-7001
NSN 6145-01-401-3713