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 6685-00-872-6345
NSN 6610-01-614-0827
NSN 6685-00-138-0692
NSN 2925-01-502-5896
NSN 4140-01-172-0084
NSN 5895-01-133-5601
NSN 5855-01-538-7024
NSN 5925-01-097-2559
NSN 5945-01-548-3229
NSN 5910-01-258-4381
NSN 5965-00-938-6271
NSN 5960-00-458-9540