WoodPro Fasteners 5/16 x5-1/8 Round Washer Head Exterior Wood Screws, 25-Pack (ST516X518-25PC)

The WoodPro ST516X518-25PC 5/16″ x 5-1/8″ Exterior Wood Screws are engineered for strength and corrosion resistance in demanding outdoor and structural applications. Featuring a gold galvanized PPG 1,500-hour E-Coat, these steel screws are built to last through harsh conditions. The round washer head and Torx-compatible T-30 star drive offer secure fastening with minimal slippage, while the patented ASTER thread and Type-17 point ensure quick starts and smooth drilling. Ideal for post-to-pole framing, insulation panels, and general wood fastening.

Features:5/16″ diameter x 5-1/8″ length wood screwsIncludes 25mm T-30 star bitRound washer head with Torx-compatible star driveGold galvanized PPG 1,500-hour Electro-Polyseal E-CoatPatented ASTER thread for fast startingSharp Type-17 point for easy penetrationBenefits:High corrosion resistance for long-lasting outdoor useReduces bit slippage with secure star driveEffortless drilling in wood materialsIdeal for structural and exterior wood fastening tasksReliable performance in harsh environmentsTechnical Specifications:Material: Steel (Alloy Steel)Drive System: Torx (T-30)Head Style: Round Washer HeadFinish: Gold Galvanized with PPG 1,500-Hour E-CoatThread Size: 5/16″Length: 5-1/8″Thread Type: ASTER, Right HandPoint Style: Type 17Package Quantity: 25 screws + 1 star bitItem Weight: 1.26 lbsMade in: Taiwan