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 5925-01-310-2817
NSN 5965-00-782-1662
NSN 5910-01-418-0991
NSN 6620-01-068-6224
NSN 5915-01-625-3376
NSN 5945-01-335-5259
NSN 5945-01-619-4458
NSN 5960-00-857-6786
NSN 5999-01-097-9185
NSN 5950-00-208-6148
NSN 6650-00-801-8298
NSN 5945-00-035-4439