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 5925-00-229-3519
NSN 6620-01-367-4960
NSN 5925-01-444-3880
NSN 5915-01-218-8924
NSN 7035-01-132-7209
NSN 5935-01-406-2882
NSN 5905-01-206-4998
NSN 5935-01-039-7594
NSN 6220-00-536-8763
NSN 5945-01-381-2038
NSN 5925-01-655-0824
NSN 5975-00-146-7925