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 5910-01-373-2318
NSN 5905-00-225-8402
NSN 5920-01-461-3718
NSN 5999-00-086-8567
NSN 2925-00-513-6644
NSN 5930-00-222-3770
NSN 5950-01-172-8205
NSN 5965-01-612-3799
NSN 5925-01-349-6509
NSN 6685-01-268-1724
NSN 6145-00-278-0697
NSN 5835-01-360-2657