⁵⁄₁₆” Hex Head 12G Purlin/Roofing Screws (1″~6″)

Hex Head Self-Drilling Purlin/Roofing Screws 1″ to 6″

Hex Head Self-Drilling Purlin Screws – Watertight Seal, High Performance for Metal Roofing and Framing

These Hex Head Self-Drilling Purlin Screws are essential, high-performance fasteners for securing metal construction. The range of lengths, from 1 inch up to 6 inches, allows them to be used for everything from simple metal lap joints to deep fastening through insulation and into structural purlins. The self-drilling (Tek) tip eliminates the need for pre-drilling through metal sheets, significantly accelerating installation time.

The design includes a Hex Head with an integrated bonded neoprene washer. As the screw is driven, the neoprene compresses to create a durable, watertight seal around the screw hole, preventing water ingress and inhibiting corrosion. The plated steel construction ensures the fastener resists exterior weather elements, providing a reliable and long-lasting connection.

Key Benefits

• Self-Drilling Efficiency: Tek tip drills its own pilot hole, accelerating metal-to-metal or metal-to-wood fastening (no pre-drilling required).

• Watertight Seal: Bonded neoprene washer compresses to seal the screw hole, preventing water ingress and rust.

• Extreme Versatility: Available in lengths from 1 inch (for lap joints) up to 6 inches (for deep purlin fastening/insulation).

• Corrosion Resistance: Plated steel finish protects the screw from exterior weather elements.

• High Torque Driving: Hex head design allows for powerful driving using dedicated hex socket drivers.

Technical Specifications

• Product Type: Hex Head Self-Drilling Roofing Screw (Tek Screw)

• Lengths Available: 1 inch to 6 inches

• Head Type: Hex Head with Bonded Washer (Metal + Neoprene)

• Thread Type: Coarse Thread (Versatile for Metal and Wood)

• Point Type: Self-Drilling (Tek) Point

• Finish: Plated Steel (Corrosion Resistant)

• Grade: Construction/Exterior Roofing

Perfect For

• Fastening corrugated metal roofing and siding panels to steel or wood purlins.

• Securing metal overlap/lap joints (using short lengths).

• Deep fastening into thick wood beams or through layers of insulation (using long lengths).

• Commercial and residential exterior construction requiring a guaranteed watertight seal.

Application Instructions

• Driving: Use a variable speed drill equipped with a correct size hex driver bit (socket).

• Setting: Drive the screw straight through the panel and into the purlin.

• Tightening: Stop driving immediately when the neoprene washer is visibly compressed and sealed against the panel. Do not over-tighten or crush the neoprene.

• Safety: Wear safety glasses during installation.

Pro Tips

• Always drive the screw perpendicular to the panel to ensure the washer seats correctly and prevents leaks.

• The Tek tip performs best at high RPM; use a powerful drill for best self-drilling results.

• Do not over-tighten, as crushing the neoprene will cause the seal to fail prematurely.

• Use the appropriate length screw to ensure adequate penetration into the purlin (minimum 1 inch past the material).

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