The Simpson Strong-Drive TF Wood-to-Steel Screw in #14 x 3" is a load-rated structural fastener engineered and extensively tested for demanding wood-to-metal connections. Designed to bore through wood and into steel up to 15/32-in. thick, this screw delivers reliable holding power in applications such as truck bed decking, trailer flooring, and general wood-to-steel fastening. Its N2000 Mechanically Galvanized finish provides corrosion resistance suited to exterior and industrial environments, making it a dependable choice wherever structural integrity and lasting performance are required.

Key Features

• Flat head with nibs - countersinks cleanly into the wood surface for a flush, professional finish and provides excellent pull-through resistance, reducing the risk of the fastener pulling free under load.
• #5 drill point with wings - bores through the wood member first before engaging the steel, reducing friction and heat buildup and allowing cleaner, faster installation without pre-drilling.
• Self-tapping threads at 14 TPI - cut directly into the steel member as the screw drives, creating a secure mechanical connection without the need for a separate tapping step.
• T30 6-lobe drive recess - transfers torque efficiently and reduces bit cam-out during installation, giving installers a more controlled, secure driving experience.
• N2000 Mechanically Galvanized coating - provides corrosion resistance for use in exposed or demanding environments where bare steel fasteners would deteriorate over time.
• Max. grip length of 1.94 in. - engineered to engage the correct depth of material, ensuring the fastener performs as rated within its specified wood-to-steel application range.
• Rated for steel up to 15/32-in. thick - covers a wide range of structural steel member thicknesses commonly found in truck beds, trailer frames, and steel-framed construction.

Why This Product

• Eliminates the need for pre-drilling in wood-to-steel assemblies - the #5 drill point with wings handles wood penetration automatically before engaging the steel, saving installation time on truck bed and trailer flooring projects.
• Engineered and extensively tested by Simpson Strong-Tie for structural applications - not a general-purpose fastener, but a load-rated screw designed specifically for wood-to-metal connections where joint strength matters.
• The included T30 6-lobe driver bit means installers can get started immediately without sourcing a separate bit, reducing downtime on job sites.
• N2000 Mechanically Galvanized finish makes this screw appropriate for exterior-exposed assemblies and industrial environments where long-term corrosion resistance is a requirement, not just an option.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #14
• Length: 3 in.
• Head Type: Flat Head
• Head Diameter: 0.460 in.
• Drive Type: T30 6-Lobe
• Thread Type: Tapping Threads
• TPI: 14
• Max. Grip Length: 1.94 in.
• Point Type: Drill Point with Wings
• Point Size: 5
• Coating/Finish: N2000 Mechanically Galvanized
• Country of Origin: Taiwan

Available Pack Options

• TFG1475R50: 50 Pk - includes T30 6-lobe driver bit included
• TFG1475R1000: 1000 Pk - includes T30 6-lobe driver bit included

Approved Applications

• Truck Beds / Trailer Flooring
• Fastening Wood-to-Steel

Frequently Asked Questions

What is the maximum steel thickness this screw is rated for?

This screw is designed to bore through wood and into steel up to 15/32-in. thick, making it compatible with a wide range of structural steel members used in trailer frames, truck beds, and steel-framed construction.

Do I need to pre-drill the wood before installing this screw?

No. The #5 drill point with wings is specifically designed to bore through the wood member on its own before engaging and drilling into the steel, eliminating the need for a separate pre-drilling step in the wood.

What drive bit does this screw require?

This screw uses a T30 6-lobe drive recess. A T30 6-lobe driver bit is included, so installers can begin work immediately without sourcing a separate bit.

Is this screw suitable for exterior or corrosion-exposed environments?

Yes. The N2000 Mechanically Galvanized coating provides corrosion resistance, making this fastener appropriate for use in exterior-exposed assemblies and industrial environments such as truck bed and trailer flooring applications.