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 6130-01-595-2236
NSN 5910-01-530-1732
NSN 6240-00-863-6105
NSN 5998-00-633-5169
NSN 6650-00-784-9222
NSN 5905-01-383-9538
NSN 5975-00-674-8339
NSN 6240-00-985-5244
NSN 5920-01-268-0720
NSN 5950-01-322-0292
NSN 2925-00-065-9986
NSN 6240-01-242-4495