Coach Bolts vs Coach Screws - What's The Difference?

It’s a common source of confusion, especially given the similar names! However, they are different fixings designed for different purposes.

Here’s a quick breakdown of each to help you choose the right one


Coach Bolt

(Also known as Carriage or Cup Square Bolts)

• 2 part fixing - Requires a nut
• Smooth dome head with a square neck to stop spinning when tightening
• Used for metal-to-wood or timber joints
• Offers greater clamping force – Ideal for heavier duty applications
• Requires a pre-drilled hole

Coach Screw

• Single component – screws directly into timber
• Hex head & pointed tip
• For timber-to-timber connections
• More suited to DIY and lighter-duty jobs
• Only a pilot hole is required

Fun fact: Coach bolts got their name from their historical use in horse-drawn carriages.

Designed to withstand rough terrain, they were strong enough to hold carriage frames securely together without shearing.

Check out our range of Coach Bolts & Coach Screws.