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The HILLMAN FASTENERS 41598 is a No. 8 x 1.625-inch flat countersunk head screw made from Type 305 stainless steel, designed for fastening applications that demand corrosion resistance. The No. 2 square recess drive provides reliable bit engagement and reduces cam-out during installation. Type 305 stainless steel offers strong resistance to oxidation and rust, making these screws suitable for outdoor, marine-adjacent, and high-moisture environments. Each pack contains 25 screws. These fasteners are a standard choice for carpenters, trim contractors, decking installers, and general tradespeople who need a dependable corrosion-resistant screw in a countersunk profile.
These screws are commonly used in residential and light commercial construction applications including wood trim, cabinet installation, decking, and exterior millwork. The flat countersunk head sits flush with or below the work surface for a clean finished appearance. The square recess drive is compatible with No. 2 square drive bits, which are standard equipment for most trim and finish carpenters. Sold in a 25-count pack suitable for small jobs or restocking.
Designed as a standard No. 8 flat countersunk head wood screw compatible with applications requiring a No. 2 square drive bit and Type 305 stainless steel corrosion resistance.
Installation is typically performed by carpenters, trim contractors, or general construction tradespeople using a No. 2 square drive bit. Pre-drilling a pilot hole is recommended in hardwoods and near board edges to prevent splitting. Countersink the pilot hole to allow the flat head to seat flush with the surface. Use appropriate PPE when working with power drivers.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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