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 5985-01-009-8595
NSN 6610-00-825-5774
NSN 5998-01-022-9964
NSN 6320-01-462-2295
NSN 6110-00-967-4257
NSN 5998-01-650-5484
NSN 5920-01-010-3293
NSN 6105-00-861-8295
NSN 2925-01-577-0004
NSN 5910-01-314-3935
NSN 4140-00-198-4961
NSN 5910-01-583-7818