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 5990-01-609-4793
NSN 5960-00-359-7768
NSN 5930-01-017-8231
NSN 5935-00-721-4155
NSN 5990-00-484-3189
NSN 6320-00-433-2773
NSN 5960-00-808-8197
NSN 6645-00-664-4665
NSN 6320-00-731-6134
NSN 5960-00-222-6174
NSN 5950-00-799-5559
NSN 6135-01-466-0192