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 5905-00-452-7068
NSN 6105-01-309-8014
NSN 5910-00-563-2432
NSN 5935-01-066-0668
NSN 6220-00-583-9889
NSN 6130-01-555-8531
NSN 6105-01-512-8752
NSN 6150-00-752-2542
NSN 5975-00-507-7670
NSN 5985-00-486-7174
NSN 6130-00-991-7462
NSN 5960-00-147-0519