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 5945-00-542-9596
NSN 5835-01-544-9670
NSN 6610-01-451-3877
NSN 6685-00-177-6491
NSN 2925-01-101-0463
NSN 7035-01-514-0599
NSN 5965-01-055-7645
NSN 6620-01-448-1423
NSN 6150-00-516-1798
NSN 5945-01-650-1812
NSN 5965-00-615-7118
NSN 5930-00-508-5944