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 5935-01-376-8948
NSN 6220-01-463-3380
NSN 6220-00-406-8098
NSN 5950-01-083-1519
NSN 5835-01-131-2027
NSN 2925-01-359-4027
NSN 6610-00-953-2397
NSN 5920-00-382-8849
NSN 6685-00-198-9506
NSN 5915-01-025-1362
NSN 6610-01-467-7068
NSN 5999-01-091-9107