The WS5-EXTR12 from MiTek/USP is a ¼″ × 5″ hex-head structural wood screw engineered for strength and ease of installation. Ideal for outdoor framing, ledger, beam, and siding applications, this screw connects wood-to-wood or steel-to-wood surfaces with high performance and reliability. Designed for exterior use, it features a triple zinc finish and self-drilling tip—sold individually for customized project needs.
Key Features
Hex Head Design – Provides maximum torque and secure fastening
Washer-Style Head – Distributes load evenly and prevents pull-through
Self-Drilling Type 17 Point – Eliminates the need for pre-drilling
Triple Zinc Exterior Coating – Protects against rust and corrosion
Grade 5 Alloy Steel – Ensures exceptional strength and durability
Length Stamped on Head – Quick identification during installation
Specifications
Specification
Details
Model
WS5-EXTR12
Diameter
¼″ (0.25″)
Length
5″
Head Type
Hex Head (washer style)
Drive Size
3⁄8″ hex driver
Point Type
Type 17 self-drilling
Material
Grade 5 alloy steel
Finish
Triple zinc coating (exterior rated)
Applications
Perfect for structural and outdoor projects, including:
Deck ledger and beam connections
Post-to-beam assemblies
Exterior framing and timber joints
Steel-to-wood ledger anchoring
Pergolas, fences, and garden structures
Benefits
Fast Installation – No pre-drilling required
High Torque Capacity – Hex head allows secure tightening
Corrosion Resistance – Triple zinc finish for outdoor longevity
