M12 x 40 Hex Coach Screw - Grade 4.6 Mild Steel Galvanised Finish

Features and Benefits

• Lag thread cuts directly into timber without tapping, providing strong withdrawal resistance.
• Hex head provides positive drive with standard spanners and impact sockets, delivering high installation torque.
• Hot dip galvanised finish provides Class 3 equivalent corrosion protection for long-term outdoor use.
• Wide size range (M6 to M20, 25 mm to 200 mm) covers light through heavy structural applications.
• Tapered point assists starting in pre-drilled pilot holes.

Typical Applications

• Structural timber connections including post bases, joist hangers, and framing brackets.
• Outdoor decking, pergola, and timber structure construction.
• Retaining walls and landscaping timber work requiring galvanised corrosion protection.
• Carports, garages, and sheds with structural timber or laminated timber members.
• Agricultural buildings, rural fencing, and outdoor infrastructure fastening.
• Connection of steel brackets and fittings to structural timber members.

Technical Specifications

• Thread System: Metric
• Head Style: Hex Head
• Drive: Hex Spanner / Socket
• Thread Type: Coarse Lag Thread (self-tapping into timber)
• Point: Tapered, Self-Drilling
• Grade: 4.6
• Material: Mild Steel
• Finish: Hot Dip Galvanised (HDG)
• Size Range: M6 to M20
• Length Range: 25 mm to 200 mm
• Standard: AS/NZS 4291.1