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 5935-00-925-8248
NSN 6105-01-177-4848
NSN 5915-00-950-5605
NSN 6150-00-562-5415
NSN 5915-00-153-0002
NSN 6145-01-512-8688
NSN 5960-01-005-2568
NSN 6610-01-248-4339
NSN 6110-01-247-4192
NSN 6650-01-328-8363
NSN 5985-01-093-5628
NSN 5935-01-630-2305