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 6610-01-003-9763
NSN 6620-00-613-2362
NSN 5960-00-188-8648
NSN 6110-01-557-4985
NSN 5960-01-197-4461
NSN 5985-00-147-9011
NSN 5915-01-435-5275
NSN 6130-01-101-5891
NSN 5965-00-486-7907
NSN 5855-01-519-7929
NSN 5960-00-004-1088
NSN 7035-01-443-3052