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 6105-01-517-2448
NSN 5998-01-063-7066
NSN 6620-01-470-3854
NSN 6220-00-812-0515
NSN 5945-00-868-5386
NSN 6645-01-381-6084
NSN 7035-00-371-7749
NSN 7035-01-429-7954
NSN 5930-00-345-7858
NSN 6650-01-265-0650
NSN 7035-00-270-5519
NSN 6620-00-248-6950