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 7035-01-160-4423
NSN 5930-01-631-3871
NSN 6130-01-102-9068
NSN 6105-00-287-8971
NSN 6320-01-119-3935
NSN 2925-01-448-2880
NSN 6620-00-124-4296
NSN 6145-00-879-1270
NSN 5960-00-752-1012
NSN 6220-01-062-2077
NSN 6240-00-155-5817
NSN 2925-00-660-8131