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 5915-00-191-3616
NSN 5960-00-529-2704
NSN 5965-01-025-5129
NSN 5855-01-258-5161
NSN 6130-00-373-1757
NSN 6320-01-384-3850
NSN 6685-01-306-7813
NSN 6150-00-932-4036
NSN 5985-01-563-8110
NSN 6145-01-205-5936
NSN 4140-01-485-0083
NSN 5895-01-661-0104