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 6610-00-482-2265
NSN 5945-01-535-6385
NSN 6150-00-235-3667
NSN 6610-01-484-8980
NSN 5998-00-300-2623
NSN 5835-01-312-4446
NSN 5910-01-039-9740
NSN 6645-00-204-4100
NSN 6110-01-078-0834
NSN 5960-01-374-3527
NSN 5925-01-215-1386
NSN 5960-01-144-5502