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 5905-01-519-8673
NSN 6645-00-919-2201
NSN 5960-01-023-1178
NSN 5960-01-605-9921
NSN 5920-01-463-3525
NSN 5905-01-196-6154
NSN 6645-01-008-2720
NSN 5920-01-458-3672
NSN 6105-00-976-3647
NSN 6685-01-360-8914
NSN 6610-01-644-2546
NSN 6320-00-456-0836