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.)
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5855-01-029-8733
NSN 5925-01-245-7621
NSN 5965-01-230-2351
NSN 5985-01-498-2333
NSN 6220-01-529-6728
NSN 5999-01-634-0576
NSN 4140-01-506-6741
NSN 6130-01-444-6825
NSN 5925-00-361-8836
NSN 6240-01-534-5829
NSN 5999-00-533-9779
NSN 5998-01-604-5211