M6 x 25mm Hex Head Coach Screw BZP DIN 571

Heavy Duty Woodscrews

M6 coach screw with a coarse thick thread that ensures high pull-out resistance and a strong hold when used with wood. A heavy-duty wood screw with bright zinc plating (BZP) that offers a mid-level of corrosion resistance.

Using a combination of a coarse thread for great hold and pull-out resistance, along with a hex head that allows installation with a range of conventional tools. This sees the M6 hex head coach screw widely used in many sectors.

The coach screw is part of a larger range of BZP coach screws used by professionals and DIY enthusiasts alike.

M6 Coach Screw Specification:

• Thread Diameter (TD): M6 - 6mm
• Length (L): 25mm
• Thread Length (TL): 15mm
  
• Head Width (H): 10mm
• Conformity: DIN 571 Standards
• Material: Bright zinc plated steel (BZP)

The coach screw is part of a growing range of heavy-duty coach screws specifically designed for use with wood and larger timber projects.

For a range of coach screws with higher corrosion resistance, take a look at the range of stainless steel coach screws.

FAQs about coach screws

What are hex head coach screws used for?

Hex head coach screws are heavy-duty screws designed for securing timber to timber, or timber to metal. The heavy-duty nature of the coach screw sees them commonly used in decking, fencing, roofing, and heavy joinery applications. The hexagonal head allows for higher torque using a spanner or socket for a firm, reliable hold.

How are coach screws different from coach bolts?

A coach screw had a pointed tip more like traditional screws and threads directly into wood without a nut. A coach bolt (also called a carriage bolt) has a flat tip, is used with a pre-drilled hole, and passes through the material being secured on the other side with a nut.

Can I use coach screws outside

The bright zinc plating (BZP) of these Coach Screws offers a general resistance to corrosion and isn’t suitable for long term external use.

For external use, A2 stainless steel is recommended for long term use, with A4 stainless steel offering a highest level of corrosion resistance, included the use in salt water environments.

Do I need to drill a pilot hole first?

Yes, with the heavy-duty nature of the coach screw, always pre-drill a pilot hole before installation.

Should I use a washer under the head?

It’s good practice to use a flat washer beneath the hex head as this spreads the load across a wider area and protects the timber surface.

Which material should I choose - BZP, A2, or A4 stainless steel?

The coach screws at Fusion Fixings are available in 3 material types which cover a larger range of applications.
•    BZP (Bright Zinc Plated): Ideal for indoor use or dry conditions.
•    A2 Stainless Steel: Great for outdoor projects such as fences or decking.
•    A4 Stainless Steel: Marine-grade corrosion resistance and the best choice for coastal or highly corrosive environments.

Can I use coach screws in brick, block, or concrete?

Coach screws are primarily for timber; however, they can be used in masonry for certain applications if combined with a suitable wall plug or anchor.