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 5965-00-439-6287
NSN 5998-01-403-2586
NSN 5960-01-357-1261
NSN 5945-00-101-0731
NSN 6645-01-201-5802
NSN 5990-00-466-2952
NSN 6685-01-185-6394
NSN 7035-01-538-7381
NSN 5930-00-840-5804
NSN 5975-00-445-7264
NSN 6130-01-411-6284
NSN 5996-01-189-2951