
Custom Various Size Black Zinc Plain Hex Lag Screw Pan Truss Self Drilling Timber Screw Wood Construction Screw. High Grade Material: Made from C1022 and C1022A carbon steel with Grade 12.9 strength. Anti-Corrosion Surface: Available in yellow and white zinc plating for excellent corrosion resistance. Versatile Drive Type: Features Torx drive design for superior grip and installation efficiency. Wide Size Range: Diameter 3.5-6.3mm and length 16-180mm to fit various construction needs. Multiple Head Styles: Offered in countersunk and double countersunk head types for flush finishes. Global Standard Compliance: Meets DIN, GB, ANSI, JIS, GOST, ISO, SAE, IFI, and ASTM standards. Customization Options: Supports customized products developed per customer request with specific molds. Flexible Packaging: Available in bulk, small packing, or 25kg/box according to specific requirements.