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 6150-01-367-3093
NSN 5855-00-832-9341
NSN 6320-01-425-1417
NSN 6150-00-300-0395
NSN 5920-00-675-4952
NSN 5895-01-578-9629
NSN 6610-00-232-1533
NSN 4140-00-519-2781
NSN 6650-01-434-0331
NSN 5910-01-425-8838
NSN 5950-00-714-2302
NSN 5905-00-811-9145