These screws have an FX2 coating that outlasts the standard zinc coated screws. They are able to withstand over 1200 hrs in a salt spray test where the zinc coated screws are only capable of 500 hrs. Most of the original screws are of a standard size #10x 3/4" but these screws are #11x3/4" which is slightly larger in diameter and allows for a tighter fit when going back into the original hole. These screws are self drilling. I also carry 1 inch screws and #2 double square bits to drive the screws, but a #2 square bit will work.
Straightline Innovations - Performance Parts -Enclosed Trailer Screws
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