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 6105-01-541-6230
NSN 5960-01-380-9692
NSN 5855-00-174-3482
NSN 5895-01-443-2482
NSN 6145-01-526-1651
NSN 6320-00-572-5753
NSN 6620-01-352-5640
NSN 5945-01-423-3476
NSN 6145-01-380-8032
NSN 5905-00-198-6284
NSN 5996-01-386-4230
NSN 6685-01-575-4280