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 5996-00-296-8041
NSN 5895-01-423-9146
NSN 5996-01-386-6394
NSN 6610-01-400-3880
NSN 5990-00-786-0702
NSN 5945-01-139-1126
NSN 5945-00-928-4936
NSN 5985-00-736-6073
NSN 2925-00-923-5375
NSN 5895-01-571-5739
NSN 5990-01-378-7349
NSN 6685-01-064-2733