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 6130-01-563-5439
NSN 6220-01-436-3850
NSN 4140-01-608-7763
NSN 6220-01-442-5699
NSN 5975-01-421-4474
NSN 5925-00-721-3206
NSN 5990-00-838-1082
NSN 6650-01-419-7567
NSN 6135-00-995-1089
NSN 6130-01-520-5131
NSN 6620-01-357-0757
NSN 5999-01-569-5529