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 5930-00-259-3712
NSN 6105-01-008-4452
NSN 5835-00-943-2763
NSN 2925-01-308-9809
NSN 6645-01-603-9331
NSN 5895-00-730-6754
NSN 5996-01-441-1594
NSN 5996-01-356-8861
NSN 6320-00-908-6841
NSN 5835-01-550-5094
NSN 6320-01-611-4918
NSN 6135-01-480-8121