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 5999-01-499-5490
NSN 6620-00-736-8457
NSN 5996-00-283-7385
NSN 6105-01-044-7321
NSN 6110-01-062-2208
NSN 5935-01-333-8112
NSN 5835-01-038-2402
NSN 6685-00-068-6118
NSN 5999-00-284-2961
NSN 5999-01-204-8861
NSN 6220-01-247-4380
NSN 5905-01-149-2918