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 6105-00-797-0044
NSN 5965-01-441-3876
NSN 6220-01-194-2963
NSN 5998-01-008-0940
NSN 5985-00-775-6684
NSN 6620-00-820-9616
NSN 6135-01-332-0431
NSN 5975-01-350-3425
NSN 5895-00-794-2517
NSN 5905-00-932-0235
NSN 6105-01-538-5735
NSN 6610-01-522-5751