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 2925-01-592-5578
NSN 4140-01-196-5232
NSN 6320-00-513-8376
NSN 4140-00-639-9400
NSN 5999-01-286-3805
NSN 5895-01-648-8417
NSN 6650-00-527-8822
NSN 5905-00-168-1586
NSN 2925-01-595-9720
NSN 5990-01-416-1017
NSN 6130-00-756-4271
NSN 6650-00-408-4972