Overview
Coach Screw / Lag Screw is a heavy-duty fastener designed primarily for securing wood to wood or wood to metal applications where high strength and durability are required. Characterized by its thick, coarse threads and hexagonal head, the Coach Screw / Lag Screw provides superior holding power in dense materials, making it ideal for structural projects such as timber framing, decking, and heavy machinery assembly. Manufactured from high-grade carbon steel or stainless steel, these screws undergo precise threading and heat treatment processes to enhance their mechanical properties, ensuring resistance to shear forces and minimizing the risk of stripping or loosening under load. The robust design of the Coach Screw / Lag Screw allows for deep penetration into substrates, delivering exceptional grip and stability in demanding environments.
In addition to its strength, the Coach Screw / Lag Screw is engineered to withstand environmental challenges, with options for corrosion-resistant coatings or stainless steel variants suitable for outdoor and marine applications. Its versatility extends across construction, infrastructure, and industrial sectors where reliable fastening solutions are critical. The combination of a large head for easy wrench application and a tapered point for efficient insertion reduces installation time while maintaining structural integrity. The Coach Screw / Lag Screw’s ability to provide secure, long-lasting connections in heavy timber and composite materials makes it a preferred choice for professionals seeking dependable performance and enhanced safety in their fastening systems.
| Product Type | Coach Screw / Lag Screw |
| Head Style | Hexagonal Head |
| Manufacturing Process | Cold Forged and Thread Rolled |
| Thread Type | Coarse, Deep Threads |
| Common Materials | Carbon Steel, Stainless Steel |
| Available Sizes | 6mm to 20mm Diameter, 30mm to 200mm Length |
| Strength Features | High Tensile Strength, Corrosion Resistant Grades Available |
| Typical Applications | Wood Construction, Heavy Timber Fastening, Outdoor Decking |
| Surface Finishes | Zinc Plated, Hot Dip Galvanized, Black Phosphate |
| Standards | ASME B18.2.1, ASTM A307, ISO 898-1 |
| Customization | Custom Sizes, Materials, Threads & Surface Finishes Available |
Designed to withstand heavy loads and provide secure fastening in timber and wood-to-wood connections.
Available in stainless steel and coated carbon steel for enhanced resistance to rust and environmental factors.
Ensures superior grip and reduces the risk of wood splitting during installation.
Compatible with standard hex or square drive tools for efficient and reliable fastening.
Suitable for structural, decking, fencing, and heavy woodworking projects requiring strong joints.
Manufactured with high-quality materials to ensure long-lasting performance in demanding environments.
| Product Type | Coach Screw / Lag Screw |
|---|---|
| Thread Type | Coarse Thread |
| Diameter Range | M6–M24 |
| Length Range | 30–300 mm |
| Available Materials | Carbon Steel, Stainless Steel |
| Manufacturing Standards | DIN 571, ISO 898-1 |
| Surface Finish | Zinc Plated, Hot-Dip Galvanized, Plain |
| Diameter (mm) | Length (mm) |
|---|---|
| M6 | 30, 50, 70 |
| M8 | 50, 70, 100 |
| M10 | 70, 100, 150 |
| M12 | 100, 150, 200 |
| M16 | 150, 200, 250 |
| M24 | 200, 250, 300 |
