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 5965-00-163-1791
NSN 5985-00-889-0320
NSN 4140-00-597-5260
NSN 6645-00-491-0462
NSN 6685-00-782-0215
NSN 5895-01-529-3097
NSN 6130-01-170-3341
NSN 5895-01-628-9096
NSN 5935-00-601-2439
NSN 5975-00-679-6738
NSN 6645-01-248-8033
NSN 5855-01-432-2487