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 5910-01-310-7585
NSN 6320-01-384-3850
NSN 5920-00-621-0239
NSN 6110-01-502-1387
NSN 5920-00-584-4592
NSN 7035-00-088-7355
NSN 6685-01-503-3159
NSN 6145-01-062-6553
NSN 5915-01-507-0761
NSN 5835-01-131-2027
NSN 5915-01-627-2151
NSN 6320-01-165-8932