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 5975-00-140-5352
NSN 5920-00-121-5824
NSN 6220-00-168-2001
NSN 5965-00-513-1352
NSN 5996-01-513-2521
NSN 4140-01-654-9002
NSN 4140-01-469-7169
NSN 6130-01-205-0395
NSN 5915-00-919-0012
NSN 5930-00-182-1437
NSN 6620-01-219-0923
NSN 5915-00-363-9571