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 5895-01-605-2008
NSN 5855-00-479-9819
NSN 5915-00-646-6187
NSN 6150-01-344-4758
NSN 6145-00-468-3583
NSN 6150-00-345-7917
NSN 5975-00-371-9428
NSN 6240-00-906-6116
NSN 5950-00-042-8003
NSN 7035-00-703-3535
NSN 5835-00-231-9544
NSN 5920-01-570-8228