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 5935-01-152-2058
NSN 6130-01-391-8452
NSN 7035-00-360-2008
NSN 6240-01-184-6831
NSN 6620-01-094-6549
NSN 5945-01-537-4317
NSN 6645-00-445-5485
NSN 5945-01-417-8302
NSN 6135-01-426-8282
NSN 5985-00-883-3308
NSN 6130-01-253-2591
NSN 5930-01-427-3676