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 5920-01-311-9812
NSN 5985-00-033-5967
NSN 6220-01-211-6349
NSN 2925-00-828-5301
NSN 5998-01-422-1626
NSN 6620-01-582-2046
NSN 6220-00-104-2656
NSN 7035-01-579-9858
NSN 5915-01-252-6092
NSN 7035-01-503-2362
NSN 5920-01-658-1718
NSN 6685-01-519-9250