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 5855-00-149-0766
NSN 5905-01-084-0334
NSN 5950-01-604-9435
NSN 6320-00-809-5744
NSN 5930-01-449-7890
NSN 5835-01-222-7714
NSN 5905-01-135-2851
NSN 6685-01-401-5360
NSN 5855-01-010-4921
NSN 5945-00-928-8249
NSN 5999-01-415-5716
NSN 5915-00-100-5239