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 7035-00-797-2635
NSN 6130-01-610-3466
NSN 6320-00-270-8222
NSN 5910-00-613-6756
NSN 5960-01-522-0391
NSN 6105-01-443-1936
NSN 5998-01-171-4889
NSN 6130-01-154-4147
NSN 6135-00-170-8819
NSN 5930-01-533-4209
NSN 6220-00-528-7752
NSN 5998-01-599-8503