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 5985-01-109-1697
NSN 2925-00-300-4103
NSN 6240-01-141-5230
NSN 6240-01-514-9422
NSN 5945-00-851-6646
NSN 5945-00-721-5620
NSN 5975-01-046-5365
NSN 6620-00-062-9722
NSN 5965-00-221-6546
NSN 6220-01-032-3684
NSN 6650-01-155-3292
NSN 6110-00-242-0463