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 5935-00-203-4988
NSN 6610-00-833-5498
NSN 5910-01-033-9606
NSN 6105-01-069-2354
NSN 4140-01-168-1993
NSN 6320-01-229-6479
NSN 5950-00-238-2991
NSN 5950-00-023-4208
NSN 5925-00-160-4747
NSN 6240-01-555-8365
NSN 6620-00-678-8777
NSN 6240-01-032-9952