M6 x 140mm Coach Screw A2 Stainless Steel, DIN 571

M6 coach screw

Heavy duty, A2 stainless steel M6 coach screw, manufactured in stainless steel for high corrosion resistance making them ideal for both internal and external applications. Specifically designed for timber applications where a reliable and strong hold is needed every time.

Manufactured with a thick cylindrical thread which allows for a strong hold and high pull out resistance when used within wood, while the hex head allows for installation with a range of conventional tools.

A great combination that sees the coach screw used across many sectors by professionals and DIY enthusiasts alike.

20mm Coach Screw Specification:

• Thread Diameter (TD): 6mm
• Length (L): 140mm
• Thread Length (TL): 84mm
  
• Head Width (H): 10mm
• Conformity: DIN 571
• Material: A2 Stainless Steel

Used by the professional contractors and DIY enthusiasts alike. Part of a growing range of coach screws available from Fusion Fixings! All are available with bulk discount across the range.

FAQs about stainless steel 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?

Yes, these stainless-steel coach screws can be used outside as they have a high resistance to corrosion. For harsher areas like saltwater environments, A4 stainless steel coach screws are advised as they offer the highest corrosion resistance.

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.

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