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 5960-01-116-2092
NSN 6320-01-643-0850
NSN 5945-00-701-0824
NSN 6620-00-917-5259
NSN 7035-01-594-9198
NSN 5895-01-634-0630
NSN 6105-01-127-8408
NSN 5835-00-510-0890
NSN 6645-01-497-6543
NSN 6240-01-212-3255
NSN 5965-01-138-9288
NSN 6135-01-054-2462