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 2925-01-331-5039
NSN 5945-01-224-7272
NSN 5855-00-760-3870
NSN 6645-01-437-9017
NSN 5915-01-329-4924
NSN 6135-00-505-0679
NSN 6135-00-756-6149
NSN 5855-01-458-0211
NSN 5965-01-331-1644
NSN 5915-01-382-9383
NSN 5855-00-885-8452
NSN 6650-00-052-3202