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 6685-00-227-0212
NSN 5950-01-447-2613
NSN 6145-01-412-0926
NSN 2925-01-424-0235
NSN 6150-01-429-5957
NSN 5960-01-156-1396
NSN 6110-00-614-9218
NSN 5945-01-597-1077
NSN 7035-00-557-5570
NSN 6220-01-475-3202
NSN 5930-01-595-3596
NSN 5950-00-409-2200