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 5915-01-555-8081
NSN 5945-01-533-7532
NSN 5996-01-455-6495
NSN 5965-00-296-9994
NSN 5950-01-398-6278
NSN 7035-01-487-6481
NSN 7035-01-363-4540
NSN 6610-01-359-6555
NSN 5998-01-238-7069
NSN 5950-01-608-1308
NSN 6650-01-510-9488
NSN 5835-01-384-3206