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These 18-8 stainless-steel flat-head screws are a good choice for construction wherever corrosion is a concern, indoors and out. The notched Type 17 self-drilling tip and ridges under the head eliminate the need for pre-drilling and countersinking. Fits a square-recess (#2) drive. Offered in packages of 25.
See HERE for a data sheet with links to over 150 of our specialised fasteners.