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 7035-01-432-9034
NSN 5996-01-455-6495
NSN 7035-01-068-5077
NSN 6110-01-100-4445
NSN 6610-00-184-0833
NSN 4140-01-398-0286
NSN 5855-00-089-3974
NSN 5905-01-412-6227
NSN 6145-01-391-5148
NSN 6240-01-442-7746
NSN 2925-00-215-4954
NSN 6135-01-132-6310