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 5960-00-134-7120
NSN 5895-00-714-0957
NSN 5985-01-090-1100
NSN 6650-00-864-2942
NSN 6110-01-090-9906
NSN 6220-00-138-0589
NSN 5925-00-330-8778
NSN 5915-01-201-2937
NSN 6650-01-382-8569
NSN 6105-00-418-6019
NSN 6620-00-062-4746
NSN 5985-01-476-3775