WoodPro 5/16 x 3-1/2 Exterior Washer Head Screws 25-Pack (ST516X312-25PC)

WoodPro Fasteners ST516X312-25PC exterior wood screws are engineered for durability and corrosion resistance, making them ideal for interior and exterior wood projects such as post-to-pole framing and insulation panel installation. These 5/16-inch by 3-1/2-inch screws are made from steel with a gold galvanized finish and feature a round washer head with a square drive. The PPG 1,500-hour golden Electro-Polyseal coating ensures long-term outdoor performance, while the Type-17 point and patented ASTER thread provide clean, quick starts and smooth driving with the included T-30 Star bit.

Features5/16″ x 3-1/2″ size with included 25mm T-30 Star bitTorx-compatible T-30 STAR drive reduces slippagePatented ASTER thread for fast startingType-17 point for easy, accurate drillingPPG 1,500-hour golden E-Coat resists corrosionBenefitsIdeal for exterior wood applicationsMinimizes recess fill and chipping during installationSupports high-torque driving with reduced cam-outDelivers long-term durability in harsh environmentsSuitable for framing and insulation panel projectsTechnical SpecificationsBrand: WoodPro FastenersPart Number: ST516X312-25PCMaterial: Alloy SteelFinish: PPG Golden 1,500 Hour E-CoatDrive System: Torx (T-30 Star Bit included)Head Style: Square, Round Washer HeadPoint Style: Type-17Thread Type: Partial Thread, UNSize: 5/16″ x 3-1/2″Color: GoldPackage Quantity: 25 ScrewsDimensions: 3.5 x 3.5 x 2.4 inchesWeight: 2.4 ozCountry of Origin: TaiwanUsage: Interior and Exterior Wood Applications