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 7035-01-479-5268
NSN 5920-01-503-7235
NSN 5990-01-176-2724
NSN 5835-00-257-2852
NSN 5905-00-526-0753
NSN 6685-01-401-5360
NSN 2925-01-244-3016
NSN 5930-01-399-2262
NSN 5930-01-347-0755
NSN 7035-01-432-2424
NSN 2925-00-928-5931
NSN 5930-01-225-6781