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 6685-01-021-3064
NSN 6130-01-183-5604
NSN 6620-00-658-6588
NSN 6130-01-588-6581
NSN 6150-00-360-1508
NSN 7035-01-090-3369
NSN 5915-01-224-9516
NSN 6220-00-734-8874
NSN 5930-01-579-5239
NSN 6145-00-126-1606
NSN 5905-01-514-0081
NSN 5990-01-538-4880