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 6240-00-326-2966
NSN 5855-00-944-0949
NSN 6220-00-379-4044
NSN 5990-01-606-7521
NSN 4140-01-180-8950
NSN 6650-00-299-9681
NSN 6610-00-194-0676
NSN 6105-01-543-6107
NSN 5895-01-117-6541
NSN 5998-01-100-2428
NSN 6145-01-573-4600
NSN 6105-01-085-6002