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 5895-00-335-7443
NSN 5895-01-386-3049
NSN 5990-01-400-3299
NSN 2925-00-136-2612
NSN 5985-01-144-6156
NSN 5965-01-437-8442
NSN 6110-00-978-8329
NSN 5996-01-147-6054
NSN 6105-00-361-7111
NSN 6320-00-593-0379
NSN 5996-01-441-6817
NSN 6150-01-363-8388