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 5975-01-114-3410
NSN 6320-00-089-9426
NSN 6135-00-078-9931
NSN 5996-01-278-9294
NSN 5965-00-711-6419
NSN 5905-01-414-1119
NSN 5895-01-118-0157
NSN 6130-00-283-2759
NSN 6135-01-061-1862
NSN 6105-01-189-6946
NSN 5945-00-454-5336
NSN 5920-01-201-7346