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 5996-01-360-9877
NSN 5950-01-241-0274
NSN 5910-01-499-4766
NSN 5996-01-381-1316
NSN 6130-01-372-2819
NSN 4140-00-878-0614
NSN 6130-01-146-5241
NSN 6150-01-025-3696
NSN 5930-00-420-1385
NSN 5996-01-574-8853
NSN 6145-00-914-1704
NSN 6135-00-548-2765