Elevate your next concrete or masonry project with this 75-piece pack of 1/4″ x 3-1/4″ hex-head masonry screws. Engineered from high-strength alloy steel and polymer-plated for superior corrosion resistance, these anchors deliver dependable performance in concrete, brick and block substrates. The coarse, right-hand UNC threading bites quickly into pre-drilled holes, providing a secure hold and up to 1500 lbf of shear strength for hanging fixtures, securing framing or mounting railings.

Designed for fast, one-step installation, the hex-washer head drives flush against surfaces—no separate washer needed. Whether you’re a professional contractor or a DIY enthusiast, these concrete screws simplify anchoring tasks and help ensure long-lasting, vibration-resistant assemblies.

Key Features

• Precision-engineered alloy steel body with polymer plating for rust protection
• Hex-washer head for full-width bearing and easy installation with a standard socket or hex bit
• Fully threaded shank for maximum engagement in masonry substrates
• Coarse, right-hand UNC threads cut into concrete for reliable holding power
• Rated up to 1500 lbf shear strength for heavy-duty anchoring
• Includes 75 screws per pack for multisite or large-scale projects