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 5996-01-577-8354
NSN 6320-00-456-0836
NSN 5945-01-423-1009
NSN 2925-00-555-8836
NSN 7035-00-215-3272
NSN 4140-01-196-5984
NSN 6150-01-464-4299
NSN 5945-00-170-8645
NSN 2925-01-356-6017
NSN 6145-01-470-1521
NSN 5835-01-392-7683
NSN 6130-00-014-5765