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 7035-01-513-3025
NSN 5999-00-132-5586
NSN 4140-00-373-4833
NSN 5965-01-294-1396
NSN 5960-00-636-4834
NSN 6645-01-238-2718
NSN 6135-01-607-5478
NSN 5945-01-131-0943
NSN 5945-01-505-3160
NSN 5855-00-797-8217
NSN 5930-00-536-0783
NSN 5915-00-449-4488