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 6105-01-557-1219
NSN 5925-00-535-4120
NSN 6130-01-534-9753
NSN 5910-00-057-8066
NSN 7035-00-104-7613
NSN 2925-01-521-0600
NSN 6150-01-459-0990
NSN 5985-00-450-7172
NSN 6150-00-186-7809
NSN 5895-01-397-4723
NSN 2925-01-350-8372
NSN 5915-00-044-4807