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 6145-01-496-1333
NSN 6650-01-517-7867
NSN 6110-00-846-9413
NSN 2925-01-550-0177
NSN 5996-01-281-7336
NSN 5996-00-009-3661
NSN 5965-01-288-4736
NSN 5915-01-351-8037
NSN 6620-00-880-1361
NSN 6685-01-475-6641
NSN 6320-01-279-0343
NSN 5999-01-335-9130