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 5975-01-032-4641
NSN 5920-01-470-0910
NSN 6240-01-463-8276
NSN 6130-00-947-9232
NSN 2925-01-283-6740
NSN 5915-01-486-1667
NSN 5996-01-181-5438
NSN 6110-00-356-5388
NSN 4140-00-394-5744
NSN 5945-00-962-2589
NSN 6610-00-270-9974
NSN 5990-01-379-8794