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 5910-01-385-3273
NSN 5996-01-626-9892
NSN 5990-01-430-3152
NSN 6130-01-232-9605
NSN 5905-00-925-4557
NSN 6320-01-487-0336
NSN 6610-01-535-0310
NSN 2925-01-337-2508
NSN 6610-00-049-6497
NSN 5930-01-154-2201
NSN 5895-00-093-6590
NSN 6685-01-391-5316