Multi-material No. 9 Label X 3 1/4 In. L T-20+ Flat Head Serrated Construction Screws

These Spax #9 x 3-1/4 In. flat head construction screws are engineered to fasten securely across multiple materials in a single product. Ideal for wood, drywall, masonry, sheet metal, and plastic, they eliminate the need to stock different screw types for varied substrates. Whether you're building decks, installing drywall, framing, or assembling outdoor fixtures, these screws deliver consistent performance in both indoor and outdoor environments.

The flat head design sits flush with the surface, creating a clean, finished appearance without protruding fasteners. The patented 4Cut point technology prevents wood splitting and eliminates pre-drilling requirements, saving time on installation. Thread serrations reduce driving torque, which helps extend power tool battery life during extended use. HCR-X corrosion-resistant coating provides long-term durability in challenging conditions.

Features and Benefits

• Flat Head Design: Sits flush with the material surface for a professional, seamless appearance across all project types.
• 4Cut Point Technology: Patented point design prevents splitting and eliminates the need for pre-drilling, reducing preparation time.
• Multi-Material Compatibility: Works reliably in wood, drywall, masonry, sheet metal, and plastic with a single screw type.
• HCR-X Corrosion Coating: High corrosion resistance ensures durability in treated lumber and exposed outdoor environments.
• Thread Serrations: Reduce driving torque to minimize battery drain and extend tool life.

Specifications

• Brand: Spax
• Model: 4191670450804
• Size: #9 x 3-1/4 In.
• Head Type: Flat Head
• Material Compatibility: Wood, drywall, masonry, sheet metal, plastic
• Coating: HCR-X corrosion resistant
• Packaging: 1 Lb. Box (approximately 83 screws)