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 6685-00-344-3497
NSN 5835-00-244-4956
NSN 5835-00-217-2147
NSN 5975-00-337-0448
NSN 5930-01-082-3727
NSN 6620-01-212-4298
NSN 6105-00-618-4401
NSN 5855-01-444-1233
NSN 5950-01-376-5368
NSN 5950-00-001-7564
NSN 6610-00-825-1564
NSN 5960-00-866-0232