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 5985-00-717-8877
NSN 7035-01-585-9556
NSN 5915-00-225-9248
NSN 5905-00-420-1484
NSN 6145-01-242-7732
NSN 6240-00-299-9819
NSN 5950-01-152-7510
NSN 5835-00-451-2982
NSN 5999-01-306-5617
NSN 5950-00-528-4423
NSN 5960-00-981-8653
NSN 2925-01-463-8856