Square nut; heavy
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 5855-00-879-5849
NSN 5990-01-595-9441
NSN 5999-00-266-3805
NSN 5915-00-249-1539
NSN 6110-01-106-2708
NSN 5945-01-512-6633
NSN 5945-01-029-3871
NSN 5960-01-309-5933
NSN 5999-00-554-4285
NSN 5925-01-044-5508
NSN 6145-00-377-0971
NSN 6220-01-443-3637