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 5965-01-146-1311
NSN 6110-01-477-6318
NSN 6105-00-285-2774
NSN 6240-01-295-6483
NSN 5925-00-931-3127
NSN 6610-01-141-6343
NSN 5985-01-348-8596
NSN 6620-00-428-9866
NSN 5925-00-147-0749
NSN 5990-01-126-5824
NSN 5965-01-158-4187
NSN 6320-00-036-3688