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 6130-01-564-8579
NSN 5960-01-157-2641
NSN 5855-00-862-3345
NSN 5960-00-404-9374
NSN 4140-00-173-0706
NSN 5855-01-088-8700
NSN 5930-00-780-9856
NSN 6150-01-337-2504
NSN 6645-00-108-6479
NSN 5960-01-291-5593
NSN 6135-01-246-0308
NSN 5835-01-555-8963