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 2925-00-288-1394
NSN 6105-00-812-4136
NSN 5855-01-634-0259
NSN 7035-01-510-8787
NSN 6145-01-609-0028
NSN 5950-00-263-6586
NSN 6150-00-509-3650
NSN 6240-01-371-8637
NSN 6320-01-106-4414
NSN 6240-00-478-3858
NSN 5855-01-484-3619
NSN 6685-01-615-0444