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 5975-00-089-3481
NSN 6135-01-142-6456
NSN 5910-00-247-2075
NSN 5835-01-416-6455
NSN 6110-00-548-3970
NSN 6135-00-175-7132
NSN 6685-01-595-0034
NSN 5960-01-395-9834
NSN 6110-01-553-0214
NSN 6150-01-222-1725
NSN 6320-01-386-3491
NSN 5960-01-134-4099