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 6650-01-552-9344
NSN 6220-00-229-7726
NSN 5835-00-725-2087
NSN 5985-01-253-0278
NSN 5960-01-423-0803
NSN 6240-00-658-3207
NSN 5999-01-554-3383
NSN 5855-01-659-0293
NSN 2925-00-221-4977
NSN 5990-00-193-3028
NSN 6145-01-415-1263
NSN 5996-00-969-1668