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 6135-01-039-2882
NSN 5950-01-476-6581
NSN 5920-01-023-0040
NSN 5895-01-424-4241
NSN 4140-00-399-2416
NSN 5965-00-529-0602
NSN 5965-01-483-1610
NSN 6150-01-437-8548
NSN 5965-01-289-2107
NSN 6135-01-510-9986
NSN 5975-01-589-5329
NSN 5950-00-553-7964