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 5996-01-206-4104
NSN 6130-01-091-4854
NSN 5835-01-069-0700
NSN 2925-01-476-3224
NSN 5915-00-849-6667
NSN 6620-01-004-7072
NSN 2925-01-154-2876
NSN 6130-01-417-2885
NSN 6220-01-247-4721
NSN 5895-01-299-2417
NSN 5930-00-472-2080
NSN 6685-00-759-1167