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 6610-01-013-8922
NSN 5999-00-632-3279
NSN 5910-01-431-5825
NSN 2925-01-294-9823
NSN 6145-01-539-8674
NSN 5855-00-058-1293
NSN 5905-01-644-2435
NSN 6685-01-453-3773
NSN 5855-01-149-4110
NSN 6240-00-340-6977
NSN 5910-01-083-4103
NSN 5925-01-212-1492