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 6110-01-085-6698
NSN 6110-01-375-2025
NSN 5915-00-842-6823
NSN 6685-01-336-8667
NSN 5935-01-278-9117
NSN 6320-00-731-6134
NSN 5965-00-698-0433
NSN 6220-01-155-0859
NSN 5935-01-148-1200
NSN 5910-01-109-2184
NSN 5985-00-932-5333
NSN 5895-01-367-2922