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 6145-00-311-8884
NSN 5998-01-049-3652
NSN 5996-01-089-4703
NSN 6130-00-419-3642
NSN 5910-00-811-2459
NSN 5935-01-146-7092
NSN 5975-00-389-6958
NSN 6130-01-185-3042
NSN 5910-00-111-2065
NSN 6110-01-429-9304
NSN 6685-01-610-1450
NSN 5905-01-555-8077