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 6145-00-493-4073
NSN 6105-00-135-7336
NSN 6685-01-615-0726
NSN 6145-01-548-4920
NSN 6620-00-957-9325
NSN 6110-01-030-8283
NSN 6650-01-578-3159
NSN 5895-01-571-0077
NSN 4140-01-217-6290
NSN 6145-00-255-7696
NSN 6685-00-203-4485
NSN 6685-00-238-6586