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 5910-01-417-3160
NSN 6105-00-791-8789
NSN 6145-00-081-1073
NSN 5855-01-420-4988
NSN 6220-01-242-2129
NSN 6685-01-329-9121
NSN 5960-00-925-3721
NSN 6645-00-825-2448
NSN 6685-00-362-8183
NSN 5990-00-764-1824
NSN 5950-01-100-2106
NSN 5985-01-011-3864