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 5835-01-336-1153
NSN 5835-01-432-8801
NSN 5945-01-260-9321
NSN 6110-01-372-7842
NSN 5910-01-161-7545
NSN 5920-01-073-3334
NSN 6135-01-303-0295
NSN 5910-01-342-0835
NSN 5895-00-617-6340
NSN 5905-01-054-5102
NSN 5985-00-323-1317
NSN 2925-01-325-3974