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 6105-00-957-8237
NSN 7035-00-126-1899
NSN 6240-00-978-9752
NSN 5905-01-141-7647
NSN 6240-00-296-0488
NSN 6135-01-029-9315
NSN 5855-01-007-9541
NSN 6650-01-383-4526
NSN 5985-01-654-7054
NSN 6145-00-719-7395
NSN 6130-00-381-1927
NSN 6220-01-406-5351