12 x 2 Self-Drilling Metal Screws, 305 Stainless Steel, Hex Head, Hex Drive - GID 1 3LHJ2 - Box of 1000
Used extensively for sheet-metal work, these screws have special points that drill through the steel sheet metal quickly, then self-tap the hole and pull everything together securely. 5/16" hex size, #3 point. Made in Taiwan.
Note:When building in a seaside environment, use 316 grade stainless fasteners to achieve adequate corrosion resistance.
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