US Fasteners, #12 x 2-1/2", Zinc plated steel |
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Wood screwsScrews with a smooth shank and tapered point for use in wood. |
Sheet metal screwsScrews with large threads for use in sheet metal sometimes also used in plastic, fiberglass or wood. |
Machine screwsScrews with machine threads for use with a nut or in a tapped hole. |
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