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 5915-00-381-9197
NSN 5895-00-147-7034
NSN 6240-01-461-3129
NSN 6240-00-340-6977
NSN 6105-00-116-1249
NSN 5985-01-152-2693
NSN 5960-00-080-3700
NSN 6220-01-446-8454
NSN 6145-00-372-3713
NSN 5925-01-548-4918
NSN 5996-00-720-3064
NSN 5915-01-462-5900