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 5996-01-508-7222
NSN 5960-01-023-8037
NSN 5895-01-572-5437
NSN 6620-00-456-0404
NSN 5855-01-450-1080
NSN 6150-00-862-9095
NSN 7035-01-313-3677
NSN 5999-00-646-7998
NSN 6620-01-198-4468
NSN 6620-01-412-7426
NSN 5996-01-532-2765
NSN 6220-01-538-7194