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 5975-00-174-8121
NSN 5998-01-158-3535
NSN 5835-01-412-0344
NSN 5905-00-857-2976
NSN 6135-01-413-4747
NSN 6220-00-858-2456
NSN 6320-01-253-1028
NSN 5855-01-454-1538
NSN 5915-01-614-7157
NSN 6150-01-485-2322
NSN 6620-00-788-9189
NSN 5945-01-246-5466