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 6130-00-506-2291
NSN 5835-01-396-0640
NSN 5998-01-242-4696
NSN 5925-01-400-3002
NSN 5855-01-361-2362
NSN 5975-00-146-7925
NSN 5855-01-308-0955
NSN 6145-01-280-1042
NSN 6110-01-655-6364
NSN 5950-00-688-3280
NSN 5935-00-800-9210
NSN 2925-01-364-7926