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 4140-01-497-1840
NSN 4140-00-159-8471
NSN 6105-00-756-5206
NSN
NSN 4140-00-991-3807
NSN 6240-01-320-9781
NSN 6320-01-608-1935
NSN 5945-00-682-9759
NSN 5990-01-461-8969
NSN 5999-00-883-4906
NSN 6620-00-010-8190
NSN 2925-00-644-0028