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 5960-00-840-5465
NSN 5996-01-633-7979
NSN 5960-01-279-0985
NSN 5935-01-475-5285
NSN 5910-01-447-2842
NSN 2925-00-659-3522
NSN 6685-00-398-0341
NSN 6145-00-132-4800
NSN 5990-01-100-1840
NSN 6320-01-415-0953
NSN 7035-00-252-7467
NSN 5835-01-587-8787