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 5975-01-454-5607
NSN 5999-01-415-0855
NSN 6135-01-100-3593
NSN 7035-01-309-6709
NSN 5945-01-483-1316
NSN 5930-01-114-6657
NSN 5945-01-645-1474
NSN 6320-01-329-2297
NSN 5835-01-432-1277
NSN 5915-01-242-9686
NSN 6240-01-569-4482
NSN 6610-00-066-9353