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.)
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NATO Maintenance and Supply Agency Classification: Nuts of iron or steel
NSN 5965-01-383-4675
NSN 6320-01-643-0850
NSN 5835-01-116-2369
NSN 6105-01-634-0322
NSN 6130-00-596-9565
NSN 5996-00-896-7086
NSN 6105-01-634-0322
NSN 5999-01-044-6250
NSN 5990-01-018-3953
NSN 6135-00-403-0213
NSN 6610-01-554-8225
NSN 5930-00-708-3589