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 5950-00-455-8564
NSN 6150-01-197-0403
NSN 6320-01-608-1935
NSN 5965-01-261-6073
NSN 5915-00-504-9416
NSN 5925-01-099-9542
NSN 5920-01-077-9938
NSN 5895-01-487-8939
NSN 6240-00-938-1512
NSN 2925-01-185-1814
NSN 6620-00-994-4917
NSN 5965-00-768-4366