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 5935-00-415-0986
NSN 6650-01-099-4340
NSN 6110-01-197-9850
NSN 6220-00-308-9728
NSN 5965-00-682-3567
NSN 6110-01-584-6432
NSN 6685-00-269-3729
NSN 5910-00-753-2850
NSN 5930-00-419-3232
NSN 5996-01-486-0172
NSN 6645-01-573-0553
NSN 6620-01-504-1827