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 5996-01-145-2784
NSN 6130-00-757-7389
NSN 5910-01-506-8645
NSN 5930-01-578-2247
NSN 6110-01-465-9032
NSN 6620-00-140-8644
NSN 5998-00-866-9885
NSN 5915-00-577-9024
NSN 5835-00-467-7294
NSN 5910-00-678-8174
NSN 6620-01-401-5356
NSN 6610-01-092-1971