External use lock washers (also called star washers) have teeth made to bite into the bearing surface. an external tooth lock washer is designed to provide stronger holds than internal-tooth washers as the teeth bite into a larger radius, and are best suited to large screws. a tooth lock washer can leave scratches on their attaching surfaces.
Choose from our selection of double-end screws, including male thread adapters, threaded rods and studs, and more. in stock and ready to ship.
Also known as double-ended studs, they have threads on both ends. vibration-resistant setup studs also known as tap-end and fixture studs, these rods have friction-fit threads on one end to resist loosening and standard threads on the other side for attaching a nut.
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