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 5945-00-004-8837
NSN 5945-01-152-5075
NSN 6145-00-174-9344
NSN 2925-00-185-1618
NSN 6105-00-404-6051
NSN 5975-01-267-6459
NSN 2925-00-228-8854
NSN 5910-01-444-1429
NSN 6130-00-935-5589
NSN 5920-01-563-5586
NSN 4140-00-707-5963
NSN 5925-01-026-9649