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 5990-01-382-5364
NSN 5998-01-179-0565
NSN 6610-01-131-4508
NSN 2925-01-507-1276
NSN 2925-00-831-7024
NSN 5855-00-631-4565
NSN 4140-00-918-7837
NSN 6610-00-222-4108
NSN 6220-00-270-4734
NSN 5996-00-316-3386
NSN 6130-00-899-8448
NSN 5985-00-134-5947