Points of hexagon to have v shaped notch from 0.020 to 0.030 deep by 90.0 degrees
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 5996-01-561-3230
NSN 6130-01-654-6314
NSN 5960-01-327-5922
NSN 6650-00-518-5194
NSN 5945-01-577-6414
NSN 5920-00-269-6178
NSN 5920-00-810-5604
NSN 5835-01-359-2575
NSN 6610-00-093-4178
NSN 5910-00-898-0486
NSN 5998-00-948-2011
NSN 5910-01-457-4096