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 5985-00-016-0410
NSN 6610-01-546-3879
NSN 5915-01-376-7687
NSN 5996-01-591-1049
NSN 5998-00-069-8385
NSN 6105-01-384-4309
NSN 5990-00-436-9008
NSN 5950-00-683-8304
NSN 5965-01-447-0840
NSN 5915-01-336-4413
NSN 6110-01-222-2176
NSN 5990-01-272-4091