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 5945-00-593-9857
NSN 6620-00-098-5652
NSN 6650-01-350-5578
NSN 6685-01-548-1225
NSN 5930-01-624-7895
NSN 5855-01-191-3404
NSN 5925-01-204-3363
NSN 5835-01-632-6627
NSN 5998-00-939-0070
NSN 6105-01-485-1846
NSN 6220-01-247-2290
NSN 5930-01-136-5394