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 5960-01-258-6708
NSN 6130-00-133-7712
NSN 5945-01-568-0669
NSN 6220-01-344-9707
NSN 5920-01-369-1801
NSN 5895-00-665-3991
NSN 5905-01-037-8131
NSN 5999-00-081-0305
NSN 5915-00-361-1136
NSN 6240-01-337-5728
NSN 5950-01-112-3668
NSN 6110-00-850-2860