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 5965-01-322-8136
NSN 5855-01-599-5491
NSN 6240-00-536-1867
NSN 5925-01-422-6474
NSN 5996-01-345-5181
NSN 5965-01-633-8849
NSN 5985-00-170-5864
NSN 6240-00-351-8564
NSN 6135-01-472-9011
NSN 5910-01-650-5424
NSN 5945-01-568-2991
NSN 6610-01-445-5274