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 5925-01-340-8601
NSN 6110-01-440-9158
NSN 5960-01-382-8772
NSN 6620-01-122-0238
NSN 5935-00-557-4380
NSN 5996-01-604-8629
NSN 5855-00-832-9341
NSN 5905-01-481-3935
NSN 5965-00-622-7025
NSN 5835-00-104-8944
NSN 6645-01-338-7066
NSN 6220-01-477-3425