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 5950-00-188-9839
NSN 5965-01-026-9865
NSN 5895-01-259-4385
NSN 5965-00-823-8623
NSN 5998-01-414-2643
NSN 5930-01-400-6126
NSN 5855-00-548-4742
NSN 6220-00-334-7008
NSN 5935-00-101-7818
NSN 5975-01-036-7523
NSN 6130-01-571-7932
NSN 5945-00-516-8761