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 5985-01-481-2803
NSN 6150-01-641-7708
NSN 5945-00-334-8980
NSN 4140-01-378-6710
NSN 5855-01-304-3064
NSN 6130-00-970-5165
NSN 5925-01-634-0664
NSN 6645-01-606-2164
NSN 6685-00-068-6118
NSN 5950-01-155-7339
NSN 5905-01-399-7573
NSN 5905-01-226-8298