Premium stainless steel body + hardened carbon steel drill point for maximum corrosion resistance and drilling performance.
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Ruspert coated bi-metal self drilling roofing screws for the most corrosive metal roofing ...
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Bi-metal wafer head self-drilling screw with a low-profile 304 stainless flange head and h...
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Bi-metal countersunk self-drilling screw combining a 304 stainless steel head with a harde...
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