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 6240-00-578-6820
NSN 6645-01-619-6301
NSN 6620-01-248-0358
NSN 5915-00-281-5414
NSN 6135-00-152-8729
NSN 5920-01-433-2261
NSN 6220-01-478-4985
NSN 5975-01-182-5806
NSN 5975-00-522-5128
NSN 4140-01-366-4034
NSN 5935-01-057-2738
NSN 6145-00-014-5759