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 5996-00-240-3224
NSN 6320-00-682-3448
NSN 5960-01-201-5804
NSN 5990-01-270-1015
NSN 5996-00-045-8379
NSN 5996-01-352-8623
NSN 7035-00-104-7613
NSN 6610-00-629-1883
NSN 6610-01-504-1276
NSN 4140-00-965-1266
NSN 7035-00-115-1886
NSN 4140-01-553-6883