Multi-material No. 8 Label X 1-1/4 In. L Unidrive Flat Head Serrated Construction Screws

The Spax 4101020400322 is a versatile #8 x 1-1/4 in. flat head construction screw engineered for multiple materials and applications. Whether you're working with wood, drywall, concrete, masonry, or plastic, this multi-purpose screw delivers reliable fastening performance across a wide range of projects—from deck building and cabinetry installation to general carpentry and repair work.

These screws feature a full-thread design with a 4-cut point that eliminates the need for pre-drilling in most materials, saving time and effort on the job site. The unique flat head design with ribs on the underside ensures a clean, flush, or countersunk finish while preventing stripping when used with metal hardware. Carbon steel construction with a durable yellow zinc finish resists corrosion and stands up to both indoor and outdoor use, making these screws suitable for demanding applications.

Features and Benefits

• Dual Drive Design: The Phillips and square drive compatibility reduces the need for tool changes during installation, increasing efficiency on multi-task projects.
• Reduced Installation Torque: The serrated thread design reduces torque needed for installation, enabling faster driving.
• Multi-Material Performance: Engineered for wood, drywall, concrete, masonry, and plastic, adapting reliably to various construction and repair scenarios.
• Flat Head with Ribs: The patented flat head design with underside ribs facilitates a clean, flush finish while preventing stripping when securing metal hardware.
• Durable Construction: Carbon steel with yellow zinc finish provides excellent corrosion resistance for both interior and exterior applications.

Specifications

• Brand: Spax
• Model: 4101020400322
• Thread Size: #8
• Length: 1-1/4 in.
• Head Type: Flat
• Drive Type: Phillips and Square
• Point Type: 4-Cut
• Material: Carbon Steel
• Finish: Yellow Zinc
• Material Gauge: 24 ga
• Grade: 5
• Thread Type: Full
• Package Quantity: 30 Pack
• Applicable Materials: Wood, Drywall, Concrete, Masonry, Plastic