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.)
NSN 5945-00-172-4833
NSN 5960-01-484-2042
NSN 5930-00-537-7366
NSN 5925-01-104-4893
NSN 6135-01-056-4609
NSN 6240-01-598-4478
NSN 5965-00-436-2226
NSN 5996-01-225-8507
NSN 5985-01-243-0495
NSN 5905-00-152-4080
NSN 5945-01-377-9927
NSN 6105-01-608-5217