Head markings indented at 120.0 degrees
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.)
Classification: Nuts of iron or steel
NSN 5965-01-513-9978
NSN 6240-01-633-9357
NSN 5935-00-423-1613
NSN 5990-00-484-3189
NSN 6320-01-192-0332
NSN 6620-01-552-9024
NSN 5855-00-951-6483
NSN 6220-00-988-5311
NSN 6320-01-455-3394
NSN 6130-01-014-8677
NSN 5935-01-454-4454
NSN 6620-00-904-2139