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 6620-01-475-1441
NSN 6620-01-622-4980
NSN 5985-01-413-3884
NSN 5920-00-938-2504
NSN 6620-01-431-0706
NSN 6685-00-845-5606
NSN 5998-01-162-8486
NSN 5835-01-015-4610
NSN 7035-01-042-0527
NSN 5895-01-546-8790
NSN 5925-01-394-1073
NSN 5960-01-023-8800