Coach Bolts

Coach Bolts / Carriage Bolts - Various Sizes

• Fully Threaded Bolts: 40-100mm
• Part Threaded: 150mm
• BZP Zinc Plated
• Nuts Included
• Size: Please Select
• Pack Quantity: Varies, Depending on Size

Often referred to as carriage bolts, these fasteners are the go-to choice for construction, decking, and woodworking projects where a strong, tamper-resistant fixing is required. Featuring a distinctive domed head and square anti-rotation neck, these bolts drive into the material for a flush, professional finish. Supplied with matching nuts and a durable Zinc Plated (BZP) finish for corrosion resistance. Choose between fully threaded for maximum grip or part-threaded for superior shear strength on thicker materials.

Key Features & Benefits

Anti-Rotation Square Neck

The square shoulder under the domed head bites into the timber or metal as you tighten the nut, preventing the bolt from spinning—meaning you only need one spanner to tighten it.

Versatile Threading Options:

Fully Threaded (40-100mm)

Ideal for thin materials or metal-to-wood fixings where grip is needed along the entire shank.

Part Threaded (150mm)

Features a smooth, unthreaded shank under the head, offering higher shear strength and allowing timber to be clamped tightly together without thread interference.

Corrosion-Resistant BZP Finish

The Bright Zinc Plating provides a robust protective layer against rust and moisture, making these suitable for both indoor joinery and protected outdoor applications (eg decking).

Nuts Included

Every bolt comes with the matching hex nut, saving you a trip to the hardware store and ensuring correct thread compatibility.

Domed Head Aesthetic

The smooth, rounded head provides a clean, low-profile finish that doesn't snag on clothing or equipment, perfect for fencing and playground equipment.