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 6130-01-426-3469
NSN 5945-00-382-5849
NSN 5925-00-062-3354
NSN 5945-01-322-3205
NSN 5910-01-045-3694
NSN 5960-00-201-5265
NSN 5998-01-052-8480
NSN 6620-01-270-7232
NSN 2925-01-239-6044
NSN 6240-01-104-5693
NSN 5925-01-421-4473
NSN 6105-00-987-6704