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 5950-01-536-5804
NSN 6110-00-491-0891
NSN 6145-01-397-2709
NSN 5996-01-545-5216
NSN 5905-00-189-9138
NSN 6105-00-515-5886
NSN 6130-01-482-6257
NSN 5945-01-160-7894
NSN 5910-00-375-5045
NSN 4140-00-481-3858
NSN 5965-01-173-2486
NSN 5996-01-459-9360