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 6105-00-626-6176
NSN 6645-01-105-9107
NSN 5930-00-914-7855
NSN 5915-00-894-0443
NSN 5935-01-306-8193
NSN 5985-00-269-4973
NSN 5985-01-249-4834
NSN 2925-00-149-0760
NSN 6685-01-222-5556
NSN 5999-01-098-8524
NSN 6620-01-233-7466
NSN 5835-00-794-7500