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 5960-01-409-1917
NSN 6685-01-646-0455
NSN 5990-00-964-9672
NSN 5950-01-364-9301
NSN 5905-00-737-4962
NSN 5915-01-176-3612
NSN 5930-01-216-4256
NSN 6610-00-045-8132
NSN 5998-01-501-1593
NSN 6320-01-106-4414
NSN 6610-01-451-4801
NSN 5996-00-342-9246