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 7035-01-421-4446
NSN 5990-00-059-3449
NSN 5996-01-568-2370
NSN 5965-01-439-9434
NSN 6130-00-419-1120
NSN 6610-01-394-4944
NSN 5985-01-418-8092
NSN 6130-01-109-8293
NSN 4140-00-174-8844
NSN 5920-00-465-0594
NSN 5935-01-403-2844
NSN 6685-01-331-6078