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 5905-00-015-4338
NSN 5915-00-519-6402
NSN 6220-01-500-0740
NSN 6110-01-604-9233
NSN 6110-00-794-2967
NSN 5930-01-634-0659
NSN 5999-01-617-5383
NSN 5905-01-025-0152
NSN 5895-00-812-2498
NSN 5835-01-391-4556
NSN 5996-01-233-0372
NSN 6105-01-243-1625