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 5915-01-135-9847
NSN 5930-01-076-2345
NSN 4140-01-386-5106
NSN 5945-00-597-5722
NSN 5915-01-410-9188
NSN 6130-01-155-6263
NSN 6650-00-809-1817
NSN 5950-00-001-3256
NSN 5910-00-827-0177
NSN 5990-00-879-0476
NSN 2925-01-381-5307
NSN 6610-00-382-0266