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 7035-01-352-6235
NSN 6685-01-497-2102
NSN 4140-01-536-9451
NSN 5990-01-296-5425
NSN 6135-01-219-8612
NSN 5950-01-597-5648
NSN 5925-01-135-5272
NSN 5960-01-553-4557
NSN 5975-01-179-0167
NSN 5998-01-521-3720
NSN 5975-01-413-7840
NSN 5960-00-300-2358