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 5975-00-942-1001
NSN 2925-00-338-4667
NSN 5855-01-541-8659
NSN 5960-00-724-5787
NSN 5990-01-432-4984
NSN 5965-00-715-6159
NSN 6110-00-525-3418
NSN 5905-00-664-4218
NSN 5990-01-314-0228
NSN 5960-00-091-8729
NSN 5935-01-324-5398
NSN 6145-01-424-3364