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 5960-00-628-2003
NSN 4140-00-538-1226
NSN 6320-00-908-6841
NSN 5915-01-147-4830
NSN 6650-01-366-7811
NSN 5920-00-683-7883
NSN 5965-01-080-4021
NSN 6240-00-454-9293
NSN 5975-01-506-2618
NSN 5960-01-411-5217
NSN 5985-01-240-9026
NSN 4140-00-711-8354