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 5895-01-596-8892
NSN 5996-01-510-3257
NSN 5855-00-058-1293
NSN 5905-01-311-7646
NSN 5950-01-388-0860
NSN 5950-01-084-2894
NSN 5990-00-137-2921
NSN 5990-00-372-5177
NSN 5915-01-284-7014
NSN 5998-00-508-1863
NSN 5996-01-028-7884
NSN 6150-00-334-0331