Fine knurl both sides
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 6130-01-087-7321
NSN 5935-01-117-8322
NSN 5965-01-322-8136
NSN 5920-00-075-9904
NSN 6130-01-400-6123
NSN 5895-01-196-6312
NSN 5999-01-024-9547
NSN 5960-01-383-6262
NSN 5998-01-445-9415
NSN 6645-01-268-7265
NSN 6610-01-379-5004
NSN 6620-01-166-4893