Galvanised Coach Bolts – DIN 603 – M8, M10, M12, M16 & M20 | SwiftFix

Galvanised Coach Bolts in Large Diameters & Long Lengths

At SwiftFix we supply a comprehensive range of galvanised coach bolts manufactured to DIN 603 standards, available in large diameters and extended lengths for heavy-duty structural and external applications.

Our range includes:

• M8 Coach Bolts
• M10 Coach Bolts
• M12 Coach Bolts
• M16 Coach Bolts
• M20 Coach Bolts
• Larger diameters on request

Available in lengths from 40mm up to 400mm long, ideal for demanding timber construction and outdoor environments.

We also stock a specialist range of high tensile Grade 8.8 hot dip galvanised coach bolts designed for applications where increased strength and corrosion resistance are essential.

Hot Dip Galvanised Grade 8.8 and 4.6 Coach Bolts

Our high tensile Grade 8.8 galvanised coach bolts provide significantly greater strength than standard mild steel coach bolts while maintaining excellent corrosion protection for external use.

These bolts are ideal where structural performance is critical, particularly in exposed outdoor or high-load environments.

Benefits of Grade 8.8 Hot Dip Galvanised Coach Bolts

• Increased tensile strength
• Excellent corrosion resistance
• Suitable for external and marine environments
• Long service life
• Manufactured to DIN 603 specification
• Ideal for heavy-duty timber construction

Applications for Galvanised Coach Bolts

SwiftFix galvanised coach bolts are used across a huge variety of industries and construction projects including:

• Timber buildings
• Oak frame construction
• Fencing
• Playgrounds
• Equestrian buildings
• Agricultural buildings
• Landscaping projects
• Sea defence structures
• Pergolas and gazebos
• Timber retaining walls
• Decking structures
• Outdoor furniture
• Civil engineering projects
• Marine and coastal applications
• General structural timber connections

Their domed head design and square neck provide secure fixing into timber and help prevent rotation during tightening.

DIN 603 Coach Bolts

All of our galvanised coach bolts are manufactured to DIN 603 standards, ensuring consistent quality, dimensional accuracy and reliable performance.

DIN 603 coach bolts are commonly used where a smooth domed finish is required on visible timber surfaces while maintaining strong clamping performance.

Large Diameter & Long Length Coach Bolts

We specialise in larger diameter and longer length coach bolts which are often difficult to source elsewhere.

Our range includes:

• M8 x 20mm to 240mm
• M10 x 20mm to 300mm
• M12 x 40mm to 400mm
• M16 x 50mm to 500mm
• M20 x 40mm to 500mm

If you require a specific size or quantity, contact the SwiftFix team for availability and bulk pricing.

Why Choose SwiftFix?

• Large stock range
• Fast UK delivery
• Specialist fixing supplier
• Trade and bulk quantities available
• Technical product support
• High quality galvanised fixings for external applications

Browse our full range of galvanised coach bolts online at SwiftFix today.