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 6135-01-521-0378
NSN 5975-00-259-9752
NSN 5930-01-084-3093
NSN 6650-01-322-4415
NSN 5855-01-407-5761
NSN 6220-01-152-7042
NSN 5945-00-802-4579
NSN 5920-01-398-0580
NSN 5950-00-702-9361
NSN 6145-00-378-3836
NSN 5950-01-222-0499
NSN 5965-01-339-3087