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CSK Cap Screw

Countersunk Cap Screws are socket-drive fasteners with a flat head that sits flush with the surface for a smooth finish. They are manufactured to ASTM, DIN, and ISO standards in alloy steel, stainless steel, carbon steel, or brass. The internal hex drive allows easy tightening in limited spaces while ensuring strong fastening strength. Available in black oxide, zinc plated, galvanized, or stainless finishes, they offer both strength and corrosion resistance. They are widely used in machinery, automotive, furniture, construction, and applications requiring a clean, flush surface finish.