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 5985-01-430-0439
NSN 5965-00-104-3121
NSN 5920-00-917-6824
NSN 4140-01-019-0555
NSN 5915-01-591-5122
NSN 6110-01-157-8794
NSN 6220-01-444-4261
NSN 5996-01-219-1850
NSN 5996-01-541-4974
NSN 5985-01-299-2691
NSN 5975-01-476-1753
NSN 5960-01-593-4760