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 6685-01-131-8405
NSN 5835-01-624-5666
NSN 5965-01-164-7982
NSN 6240-01-046-9424
NSN 5895-01-178-8889
NSN 6150-00-418-3071
NSN 5925-01-158-4513
NSN 6610-01-465-1320
NSN 5960-00-100-7329
NSN 5965-00-554-4138
NSN 5835-01-268-1924
NSN 5996-01-421-6562