Screws details
WoodPro Fasteners 5/16 x 6-Inch Round Washer Head Exterior Wood Screws, 25-Pack (ST516X6-25PC)
WoodPro Fasteners ST516X6-25PC 5/16-Inch by 6-Inch Length Round Washer Head Exterior Wood Screws, 25-Pack feature a durable steel construction with a gold galvanized finish for corrosion resistance. These exterior wood screws use a Torx T-30 star drive to reduce bit slippage, combined with a patented ASTER thread and sharp Type-17 point for quick starting and easy drilling. Coated with a 1,500-hour PPG Electro-Polyseal finish, they offer superior protection for outdoor wood projects like post-to-pole framing and insulation panel installation.
5/16" diameter x 6" length screws with round washer head
Includes one 25mm T-30 star bit for secure driving
Patented ASTER thread for fast, effortless starts
Sharp Type-17 point designed for easy drilling
PPG 1,500-hour golden Electro-Polyseal coating resists corrosion
Enhanced corrosion resistance for longer outdoor use
Reduced bit cam-out and slippage with Torx star drive
Quick start threading saves time and effort
Versatile use for interior and exterior wood fastening
Protects screw recess from fill and chipping
Technical Specifications:
Material: Steel alloy
Drive System: Torx T-30 star drive
Head Style: Round washer head
Exterior Finish: Gold galvanized with PPG Electro-Polyseal
Thread Size: 5/16 inch
Point Style: Type-17 sharp point
Thread Coverage: Fully threaded with ASTER thread
Item Dimensions: 7.9 x 3.5 x 2.8 inches
Weight: 1.8 pounds
Package Quantity: 25 screws plus one T-30 star bit
Usage: Suitable for interior and exterior wood applications
Product identification
- Brand: WoodPro Fasteners
- Model / MPN: ST516X6-25PC




