1/4" x 3‑1/4" Tapcon Flat Head Concrete Screw Anchors – 100 Pack
High‑Performance Masonry Fasteners for Professional‑Grade Anchoring
These 1/4-inch x 3‑1/4-inch flat‑head Tapcon‑style concrete screws deliver exceptional strength, durability, and installation reliability for demanding masonry applications. Engineered with advanced thread geometry to cut precision threads into concrete, brick, and block, these anchors provide secure and long‑lasting adhesion without the need for sleeves, plugs, or expansion anchors.
The flat‑head Phillips drive seats cleanly and flush into countersunk applications—ideal when installers need hardware to sit tight against mounting surfaces such as thresholds, brackets, fixtures, and structural components. Constructed from high‑grade carbon steel and finished with a blue Perma‑Seal corrosion‑resistant coating, these anchors withstand harsh indoor and outdoor environments, ensuring long‑term performance under moisture, temperature changes, and abrasive jobsite conditions.
Packaged in a 100‑count contractor box, these screws are built for professional workflows across construction, remodeling, electrical, mechanical, and general installation trades.
Key Features
- Flat Phillips-head design for flush countersinking into hardware, fixtures, thresholds, and framing components.
- Advanced self‑tapping thread design cuts deep, consistent threads directly into masonry for high holding power.
- Blue Perma‑Seal protective coating for enhanced corrosion resistance in indoor and outdoor installations.
- Carbon steel construction ensures high tensile strength and exceptional durability on tough job sites.
- Building-code compliant and safe for use in professional structural and utility applications.
- Designed for treated lumber, making it compatible with ACQ and modern pressure‑treated materials.
- Excellent removal/reusability, allowing screws to be backed out cleanly when adjustments or replacements are needed.
- Ideal for medium‑duty applications, offering reliable anchoring without excessive installation torque.
Specifications
- Model: 375311
- Diameter: 1/4 inch
- Length: 3‑1/4 inches
- Head Style: Flat Phillips
- Material: Carbon steel
- Finish: Blue Perma‑Seal climate‑resistant coating
- Drive Type: Phillips
- Thread Type: Self‑tapping, fully threaded
- Point Style: Flat‑point masonry‑cutting tip
- Anchoring Base Materials:
- Load Strength Ratings:
- Up to approx. 370 lbs in 4000‑PSI concrete
- Up to approx. 190 lbs in C‑90 block
- Up to approx. 210 lbs in brick
- Application Level: Light‑to‑medium duty
- Quantity: 100 screws per box
- Manufacturer Notes:
- Building‑code approved
- Designed for treated lumber
- Suitable for indoor and outdoor fastening
Recommended Applications
These 3‑1/4" Tapcon‑style flat‑head concrete anchors are ideal for:
Structural & Framing
- Securing sill plates to concrete foundation
- Attaching 2x lumber to masonry
- Mounting furring strips or wall framing
Electrical & Communications
- Fastening junction boxes
- Mounting conduit brackets and straps
- Installing cable trays and communication hardware
HVAC & Plumbing
- Anchoring pipe clamps, rooftop duct brackets, and equipment bases
- Installing water heater brackets
- Mounting mechanical fixtures to masonry walls
Doors, Windows, & Thresholds
- Mounting door frames and threshold plates
- Fastening window securing points into masonry openings
- Installing security screens and shutters
General Construction & Maintenance
- Securing shelving or cabinets to masonry
- Mounting signage or fixtures to brick/block
- Fastening brackets, supports, and exterior hardware