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 5935-01-089-9826
NSN 6320-01-284-4508
NSN 4140-00-245-2715
NSN 5990-01-411-5930
NSN 5985-00-785-6872
NSN 5930-01-279-1719
NSN 5975-00-204-9190
NSN 5990-01-319-5667
NSN 5930-00-820-1332
NSN 5905-01-453-3399
NSN 5895-01-234-6217
NSN 5925-01-179-4774