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 5999-01-511-0097
NSN 5930-01-153-2667
NSN 5925-00-578-4774
NSN 5950-01-239-2080
NSN 5999-00-203-1202
NSN 5910-01-431-3686
NSN 5905-01-520-7582
NSN 5945-01-420-6914
NSN 5985-01-258-4769
NSN 6610-00-263-3076
NSN 6130-01-272-7035
NSN 2925-00-749-8893