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 5945-00-402-9039
NSN 5996-00-536-4671
NSN 4140-01-251-0401
NSN 5960-01-243-0007
NSN 6610-00-000-0192
NSN 5915-01-025-9191
NSN 5950-01-428-7776
NSN 6650-00-442-0567
NSN 6320-00-456-0836
NSN 5985-01-627-8307
NSN 5910-01-569-1172
NSN 6220-00-657-2098