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 5895-01-145-9033
NSN 6645-00-145-6411
NSN 6645-00-070-8277
NSN 6135-01-579-3534
NSN 6220-01-559-7930
NSN 6610-01-445-6687
NSN 5935-01-514-1345
NSN 6645-00-409-2168
NSN 6130-01-420-7339
NSN 5925-01-480-6701
NSN 2925-01-253-6006
NSN 6145-01-183-2205