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 7035-00-020-2227
NSN 5915-01-227-4109
NSN 5960-00-372-4876
NSN 6105-00-445-5897
NSN 6610-01-088-3050
NSN 6150-01-108-1039
NSN 6135-01-054-2462
NSN 5910-00-243-8102
NSN 6610-01-352-5500
NSN 6145-00-452-4501
NSN 7035-01-433-3547
NSN 6650-00-185-3133