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 6240-01-106-1508
NSN 5835-00-235-2950
NSN 5999-00-904-4210
NSN 6135-00-416-2898
NSN 5935-00-932-3526
NSN 6610-01-010-3159
NSN 6150-00-511-8563
NSN 5975-01-510-3917
NSN 5960-01-117-6577
NSN 6145-01-420-6132
NSN 6240-01-025-2553
NSN 6685-00-096-1485