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 5930-01-629-2954
NSN 6320-01-556-2011
NSN 6130-00-186-8460
NSN 6135-00-497-0491
NSN 6240-00-733-2984
NSN 6150-01-445-1233
NSN 6320-01-277-5793
NSN 7035-01-421-2398
NSN 2925-01-360-3575
NSN 5930-01-658-9673
NSN 6220-00-907-1341
NSN 5925-01-138-8930