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 5996-01-509-6443
NSN 5985-00-584-3795
NSN 5915-00-966-8527
NSN 5835-01-013-9321
NSN 5935-01-267-7096
NSN 6105-01-463-2387
NSN 6220-01-617-5985
NSN 2925-00-957-7329
NSN 5915-00-538-7707
NSN 6645-00-007-5305
NSN 5920-01-235-0704
NSN 6610-01-083-1528