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 6135-01-618-8314
NSN 5855-00-189-6066
NSN 5950-00-060-9746
NSN 5998-01-147-5597
NSN 5998-01-103-9742
NSN 5990-00-734-7285
NSN 5965-00-052-9184
NSN 6620-01-119-9239
NSN 5999-01-367-2019
NSN 6145-01-011-6189
NSN 5835-01-268-1924
NSN 5835-01-286-6499