M12 (12mm) Hex Head Coach Screws / Lag Bolts - BZP DIN 571

Secure heavy timbers with confidence using our M12 Hex Head Coach Screws. Engineered for maximum strength and grip in demanding structural applications, these heavy-duty lag bolts are the professional's choice for everything from building robust decking frames to assembling garden sleepers and securing structural beams.

Key Features & Benefits

• Heavy-Duty M12 Diameter: Provides exceptional shear strength and load-bearing capacity for critical structural joints.

• Hexagonal Head: Allows for high-torque installation with a standard 19mm spanner, socket, or impact driver, ensuring a tight, secure, and slip-free fit.

• Coarse Thread & Sharp Point: Bites aggressively into both softwood and hardwood, delivering superior pull-out resistance and enabling a fast, easy start.

• Bright Zinc Plated (BZP) Finish: A durable zinc coating offers reliable corrosion resistance, making these screws suitable for a wide range of indoor and outdoor projects.

• DIN 571 Certified: Manufactured to precise German industrial standards, guaranteeing consistent quality, dimensional accuracy, and reliable performance for every screw.

Common Applications:

Perfect for a wide range of heavy-duty building and landscaping projects, including:

• Securing structural timber beams, joists, and wall plates.

• Assembling railway sleeper retaining walls and raised garden beds.

• Fixing large fence posts, gate hinges, and heavy-duty supports.

• Constructing decking subframes, pergolas, and carports.

• Fastening metal brackets, plates, or hardware to heavy timber.

Installation Guide:

• Pilot Hole Recommended: To prevent wood from splitting and to ensure maximum grip, drilling a pilot hole before installation is strongly recommended. For softwoods (e.g., pine), use a 6mm drill bit. For hardwoods (e.g., oak), use an 8mm or 9mm drill bit.

• Use with a Washer: For best results and to prevent the screw head from crushing the wood fibres, always use a washer (such as an M12 Form A flat washer) under the head. This distributes the clamping force over a wider area.

Technical Specification: