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 5925-01-207-8542
NSN 6645-00-052-7288
NSN 6650-01-535-5595
NSN 6130-01-285-9151
NSN 5925-01-173-4740
NSN 6620-01-401-5356
NSN 5910-01-559-9149
NSN 5999-01-418-0941
NSN 6650-00-119-5917
NSN 6620-01-462-1625
NSN 5985-00-446-2756
NSN 5960-00-584-4553