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 6220-00-494-7228
NSN 6610-00-848-4764
NSN 5935-01-055-6852
NSN 6220-00-734-0276
NSN 6130-01-569-1487
NSN 5925-00-006-3539
NSN 6685-00-900-5428
NSN 5975-01-528-8299
NSN 6135-01-286-9563
NSN 5925-01-435-9492
NSN 5855-01-412-9449
NSN 5999-00-468-7992