3/8" x 3-1/2" Lag Screw Bolt Thread

Built for Performance – GFM Lag Screw Ensures Strength and Lasting Reliability

The GFM Lag Screw is engineered for demanding structural applications where strength and precision cannot be compromised. Manufactured from high-grade steel and treated for maximum corrosion resistance, these screws deliver consistent holding power across a wide range of professional building projects.

From deck framing and beam anchoring to securing heavy timber connections, the GFM Lag Screw is designed to provide dependable fastening under load. Its durability and straightforward installation make it a reliable choice for contractors who require proven results on site.

Advantages of GFM Lag Screws

Professionals across the construction industry recognize GFM fasteners for their consistent performance and quality standards. Key advantages include:

• Engineered Strength – High-strength steel construction ensures excellent shear and pull-out resistance.
• Reliable Versatility – Suitable for timber framing, structural connections, and other heavy-duty fastening applications.
• Efficient Installation – Thread design allows for secure placement with reduced splitting and reliable torque transfer.

Technical Specifications

• Size: 3/8 x 3-1/2 inches
• Material: Hardened steel for maximum load-bearing performance
• Finish: Corrosion-resistant coating for long-term durability in exposed environments

Installation Guidance

For best results, pre-drilling is recommended to prevent timber splitting and to ensure precise alignment. Use of a power driver with the correct socket or bit provides optimal torque application. Contractors will recognize the benefit of uniform thread engagement, especially in dense or treated lumber where fastening demands are higher.

On projects where load transfer and safety compliance are critical, selecting the appropriate screw length and ensuring correct embedment depth are essential to achieving maximum holding strength.

Key Features

• High-Tensile Strength – Delivers superior load capacity for structural applications.
• Protective Coating – Provides long-term resistance against rust and environmental wear.
• Consistent Drive Performance – Designed for smooth installation and secure fastening.

Conclusion

The GFM Lag Screw is a proven fastening solution for structural and heavy-duty applications. With its combination of strength, corrosion protection, and reliable installation performance, it meets the standards professionals expect on demanding job sites. Choose GFM when dependable fastening is required to get the job done right.