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 2925-01-330-2988
NSN 5998-01-056-3080
NSN 6320-00-242-3300
NSN 5855-01-143-7051
NSN 5996-01-609-7535
NSN 5895-01-417-5601
NSN 5895-01-619-9892
NSN 6320-00-070-4544
NSN 5960-01-048-8228
NSN 5996-01-643-7644
NSN 5998-00-925-9927
NSN 5935-01-418-8844