Collection: Coach Screws

Hex Coach Screws – BZP 4.8 Steel & A2 Stainless Steel (DIN 571)

Designed for heavy-duty timber-to-timber, timber-to-masonry, and structural landscaping projects, these heavy-duty Hexagon Coach Screws (lag bolts) deliver immense holding power and high load-bearing strength. Manufactured to DIN 571 standards, they feature deep, coarse wood threads that bite deep into timber for maximum pull-out resistance, paired with a robust hexagonal head for high-torque insertion using standard sockets or spanners.

Choose from bright zinc-plated Grade 4.8 steel for cost-effective interior/covered strength or premium A2 stainless steel for ultimate weather and corrosion resistance.

Key Features & Material Specs:

• Standard: DIN 571 / Hex Head Lag Screw Profile

• Grade 4.8 Mild Steel (Bright Zinc Plated - BZP): Electro-plated zinc finish offering general rust protection and reliable tensile strength for indoor construction and dry timber applications.

• A2-70 (304) Stainless Steel: Highly resistant to rust, acid, and atmospheric weathering; essential for outdoor decking, fencing, marine environments, and treated timbers (such as ACQ or oak) that cause corrosion in mild steel.

• Heavy-Duty Hex Head: Allows maximum leverage and torque transfer using a socket set, spanner, or impact driver without stripping the head.

• Coarse Wood Thread: Specifically engineered for deep grip in softwood, hardwood, and expansion plugs for masonry anchoring.

Available Diameters: 6mm (M6), 8mm (M8), 10mm (M10), 12mm (M12), and larger lengths ranging from 30mm to 200mm+.