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 5910-00-821-6741
NSN 6135-00-008-5345
NSN 2925-00-845-1480
NSN 6130-00-947-6618
NSN 6145-01-510-9570
NSN 6650-01-367-7593
NSN 6105-01-062-2122
NSN 5999-00-925-9535
NSN 5835-00-080-8213
NSN 5945-00-853-4375
NSN 5960-00-778-6167
NSN 6620-01-152-9453