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 6105-01-529-5705
NSN 6145-01-476-4056
NSN 5930-00-623-8273
NSN 6105-00-077-1166
NSN 5950-01-276-8266
NSN 5945-01-215-0710
NSN 6240-01-157-9128
NSN 5965-01-305-2858
NSN 6150-00-932-2351
NSN 6685-01-597-5406
NSN 5975-01-226-1887
NSN 5855-01-568-1532