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 5975-01-424-3155
NSN 5895-01-272-9740
NSN 5999-00-992-7182
NSN 5985-00-134-3542
NSN 5950-00-926-3304
NSN 5975-00-983-0111
NSN 5905-01-480-0966
NSN 6150-01-165-5659
NSN 6610-00-292-5411
NSN 5985-00-870-6277
NSN 5950-00-062-4475
NSN 5910-00-931-0611