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 5960-01-586-5235
NSN 6145-01-168-1070
NSN 5999-01-576-9958
NSN 2925-00-159-9003
NSN 6610-01-495-8898
NSN 6650-00-754-2276
NSN 5855-00-361-0167
NSN 5950-01-634-0677
NSN 5990-00-930-4665
NSN 5910-01-449-2271
NSN 5855-01-054-9014
NSN 5998-01-026-0311