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 5999-00-257-9916
NSN 5895-01-299-4702
NSN 5930-01-041-7002
NSN 6650-00-296-4670
NSN 5999-01-320-0935
NSN 6110-01-082-4172
NSN 5935-00-608-4332
NSN 6645-01-481-4418
NSN 6650-01-258-5871
NSN 6240-00-115-5044
NSN 5920-01-022-5083
NSN 5965-01-274-4003