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 6685-00-619-9860
NSN 6645-01-648-4439
NSN 5895-00-296-9708
NSN 6145-01-537-9004
NSN 5925-00-780-2574
NSN 5930-00-181-5885
NSN 5975-01-389-7279
NSN 5895-01-371-2688
NSN 6685-00-276-9889
NSN 5990-00-501-4994
NSN 5835-01-338-5176
NSN 6610-00-827-8959