Indent 3 places equally spaced one side only
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 5990-00-405-5182
NSN 2925-01-294-0585
NSN 4140-00-528-2921
NSN 6135-01-036-3495
NSN 6130-00-367-2706
NSN 5855-01-444-9182
NSN 2925-00-233-5644
NSN 6220-00-454-1132
NSN 5935-01-031-3397
NSN 5935-00-537-4778
NSN 5998-01-528-8021
NSN 5965-00-100-1291