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 5960-01-467-0961
NSN 5960-01-096-0414
NSN 5905-01-167-8923
NSN 5855-01-013-6864
NSN 4140-01-641-6633
NSN 6685-01-553-6620
NSN 5985-01-005-0370
NSN 5985-01-623-1745
NSN 4140-00-420-0251
NSN 5915-01-364-1093
NSN 6610-01-051-6275
NSN 5855-01-430-3246