Coach Screws Hex Head Stainless Steel

Stainless Steel Coach Screws DIN 571 A4

Stainless Steel Coach Screws, often referred to as lag screws, are robust fasteners used primarily in wood construction but can also be used in masonry and other applications. The DIN 571 standard specifies the dimensions and mechanical properties of these screws, ensuring consistency and reliability. The A4 stainless steel designation indicates these screws are made from a high-grade stainless steel known for its excellent corrosion resistance, making them suitable for outdoor and marine environments.

Size Specifications and Spanner Sizes

The spanner size refers to the size of the wrench or spanner needed to tighten the screw. Below are the standard spanner sizes for the given diameters of coach screws:

• M6: Requires a 10 mm spanner.
• M8: Requires a 13 mm spanner.
• M10: Requires a 17 mm spanner.
• M12: Requires a 19 mm spanner.
• M16: Requires a 24 mm spanner.

Pilot Drill Recommendations

Drilling a pilot hole before inserting a coach screw is essential to prevent splitting the wood and to ensure a firm hold. The pilot drill size depends on the diameter of the screw:

• M6: Use a 4.0 mm pilot drill.
• M8: Use a 5.0 mm pilot drill.
• M10: Use a 6.5 mm pilot drill.
• M12: Use an 8.0 mm pilot drill.
• M16: Use a 12.0 mm pilot drill.

Detailed Specifications

1. M6 Stainless Steel Coach Screws:

   • Thread Diameter: 6 mm
   • Spanner Size: 10 mm
   • Pilot Drill Size: 4.0 mm
   • Applications: Light to medium-duty timber structures, securing small beams, or brackets to wooden surfaces.

2. M8 Stainless Steel Coach Screws:

   • Thread Diameter: 8 mm
   • Spanner Size: 13 mm
   • Pilot Drill Size: 5.0 mm
   • Applications: Medium-duty applications such as fence posts, decking, and larger timber beams.

3. M10 Stainless Steel Coach Screws:

   • Thread Diameter: 10 mm
   • Spanner Size: 17 mm
   • Pilot Drill Size: 6.5 mm
   • Applications: Heavy-duty timber structures, securing large beams, or structural elements.

4. M12 Stainless Steel Coach Screws:

   • Thread Diameter: 12 mm
   • Spanner Size: 19 mm
   • Pilot Drill Size: 8.0 mm
   • Applications: Heavy-duty applications, including large wooden frameworks and industrial constructions.

5. M16 Stainless Steel Coach Screws:

   • Thread Diameter: 16 mm
   • Spanner Size: 24 mm
   • Pilot Drill Size: 12.0 mm
   • Applications: Very heavy-duty applications such as securing large structural beams, heavy timber constructions, and large-scale outdoor projects.

Installation Tips

• Pre-Drilling: Always pre-drill a pilot hole to avoid splitting the wood and to ensure the screw can be driven in straight and easily.
• Driving the Screw: Use an appropriate spanner or socket wrench to drive the screw. Avoid using excessive force to prevent damaging the screw head or the surrounding material.
• Corrosion Protection: Given their A4 stainless steel composition, these screws are ideal for environments where they are exposed to moisture, chemicals, or salty air, such as coastal areas or industrial sites.

Characteristics of Stainless Steel Coach Screws DIN 571 A4:

1. Material: A4 stainless steel, equivalent to 316 stainless steel, provides superior resistance to corrosion, acids, and saltwater.
2. Head Type: Hexagonal head, allowing for easy driving with a wrench or spanner.
3. Thread Type: Coarse thread with a sharp point for easy penetration into wood.
4. Usage: Typically used in heavy-duty timber constructions, securing large beams, and other structural applications.

Conclusion

Stainless Steel Coach Screws DIN 571 A4 are a versatile and durable option for a wide range of construction applications. By selecting the correct spanner size and pilot drill based on the screw's diameter, you ensure a secure and long-lasting installation. Whether you're working on small timber projects or large structural frameworks, these screws provide reliable performance and superior resistance to the elements.