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 6650-01-166-1914
NSN 5998-01-006-1401
NSN 6135-00-951-3426
NSN 6610-01-338-0628
NSN 5895-01-586-4172
NSN 6150-01-490-3199
NSN 2925-01-463-8856
NSN 6610-01-551-0774
NSN 5999-01-630-2423
NSN 6110-01-024-1519
NSN 5915-01-484-6542
NSN 5990-01-114-5095