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 6105-00-444-6994
NSN 5985-01-529-2835
NSN 5950-00-229-6317
NSN 6135-00-919-1117
NSN 5945-00-533-3977
NSN 6650-00-134-5130
NSN 5999-01-493-3185
NSN 6150-00-841-5557
NSN 6620-00-850-3365
NSN 5920-01-312-6568
NSN 6650-00-518-5194
NSN 5925-01-521-2940