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 2925-01-535-7235
NSN 4140-01-580-3291
NSN 5998-01-391-2737
NSN 6135-01-560-3173
NSN 7035-00-541-8516
NSN 5910-00-540-1167
NSN 5910-00-905-7771
NSN 5905-01-451-4205
NSN 5998-01-170-6870
NSN 5999-01-363-1735
NSN 6645-01-375-8176
NSN 2925-00-594-1157