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 7035-01-554-0746
NSN 6220-01-128-0087
NSN 5835-00-484-1330
NSN 6135-01-529-0122
NSN 5925-01-332-6524
NSN 6645-01-106-6258
NSN 5975-00-830-2898
NSN 6110-00-402-0055
NSN 5999-01-623-9509
NSN 5999-00-584-2006
NSN 6610-00-633-1665
NSN 5999-01-198-2508