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 4140-01-171-0785
NSN 6105-01-020-6697
NSN 6645-01-422-9672
NSN 5975-01-601-0899
NSN 6135-01-648-4875
NSN 5960-01-186-5023
NSN 6105-01-077-4273
NSN 5965-01-243-5494
NSN 6150-01-033-8482
NSN 6320-00-593-0379
NSN 5996-00-124-4479
NSN 6105-01-372-5755