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 6105-01-391-7124
NSN 6610-00-603-8516
NSN 5915-00-648-6746
NSN 5965-01-204-8505
NSN 5910-01-437-9921
NSN 5910-01-145-5166
NSN 5835-00-402-8387
NSN 5855-00-862-3345
NSN 5895-01-624-6728
NSN 5905-01-146-5511
NSN 5950-00-884-8659
NSN 5925-01-642-4558