Head markings indented at 120.0 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 6685-01-420-6480
NSN 5920-01-084-2508
NSN 2925-01-625-6841
NSN 5910-01-302-0420
NSN 6105-01-446-9092
NSN 2925-01-503-6792
NSN 5950-00-964-4516
NSN 4140-01-037-6270
NSN 5915-00-087-7072
NSN 2925-00-398-0253
NSN 6610-01-394-7695
NSN 6685-01-372-8769