Fine knurl on both bearing surfaces
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 5915-01-215-1183
NSN 5855-01-573-3929
NSN 5910-01-027-4297
NSN 4140-01-144-4581
NSN 5855-00-165-3093
NSN 5835-00-185-4919
NSN 6150-00-450-5859
NSN 5835-01-357-1247
NSN 6105-01-112-9976
NSN 2925-00-674-5007
NSN 6150-01-623-1271
NSN 5945-01-657-6203