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 5835-01-576-9013
NSN 6135-01-347-9045
NSN 6620-01-354-8472
NSN 6610-00-437-5681
NSN 5835-00-145-8926
NSN 5990-00-660-8608
NSN 5985-01-212-9628
NSN 5920-01-609-5657
NSN 5925-01-051-3696
NSN 6150-01-149-4737
NSN 5950-00-090-9549
NSN 6645-01-441-0937