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 7035-01-359-6108
NSN 6130-01-138-2470
NSN 5990-01-261-2962
NSN 5996-00-856-5810
NSN 6320-01-317-3663
NSN 5960-01-124-4144
NSN 6110-01-203-3632
NSN 6240-00-226-3130
NSN 5999-00-131-7244
NSN 5999-00-269-5320
NSN 6650-01-564-2415
NSN 6650-01-592-7778