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 5915-01-515-8454
NSN 6645-01-476-8013
NSN 6130-01-220-3305
NSN 5895-01-382-1561
NSN 5925-01-329-3666
NSN 5975-01-094-6250
NSN 5960-00-522-5231
NSN 6320-01-449-1014
NSN 5895-01-199-9886
NSN 5895-00-833-2525
NSN 5975-01-634-0678
NSN 6650-01-442-7893