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 5930-01-605-9239
NSN 5999-01-510-0799
NSN 5965-00-004-6371
NSN 4140-01-177-6292
NSN 5975-00-446-7875
NSN 5895-01-220-0409
NSN 6220-01-541-6283
NSN 5965-01-626-5775
NSN 5935-00-094-0579
NSN 5915-01-095-0382
NSN 5905-01-616-4892
NSN 5998-01-577-0438