Coach Screws

When it comes to holding heavy loads firmly in place, coach screws are ideal. Featuring a hexagonal or square head, they typically have a larger diameter compared to traditional screws. Coach screws also have a coarse threaded barrel that tapers down to a pointed tip. This makes them a fantastic fixing for road modifications like speed bumps and bollards, which need fixing securely to concrete.

About Coach Screws

Coach screws (known in the US as lag screws) are heavy-duty fasteners designed for a wide range of timber-related applications, including to securely fix timber to timber, metal to timber or timber to masonry and concrete. These hard-wearing screws are ideal for holding together heavy loads, like structural timberwork, decking, and fence posts.

Unlike standard screws, coach screws have a thick, coarse thread that grips tightly into materials like timber, and are usually made from high-strength materials like steel or stainless steel. These screws can come with protective coatings like hot-dip galvanisation, which improve their corrosion resistance. These screws are available with different head types, too, but are known for their hexagonal heads that allow easier installation with an adjustable spanner or socket.

Hex Headed Coach Screws

Hex-headed coach screws are the most common type of screw found in the wild, and feature a hexagonal head. This means specialised tools aren’t needed to install them, allowing easy tightening of the head with a standard wrench, providing a tight, secure hold and making them ideal for heavy-duty applications like securing beams, posts, and timber structures.

Galvanised Coach Screws

Our galvanised coach screws have a protective zinc coating that improves their resistance to corrosion. They are suitable for both indoor and outdoor use and provide a more cost-effective solution (than stainless steel) for securing heavy loads in environments where rust and corrosion may be a concern.

Getting The Best Concrete Coach Screws For Your Needs

Before choosing the best coach screws for your project, consider the following factors to ensure they meet your needs

Material

Our stock of coach screws are all built from strong, durable materials (like mild steel) in order to be reliable in their use case. Carbon steel coach screws provide higher strength and are suitable for most general applications. Stainless steel coach screws provide excellent corrosion resistance, making them ideal for outdoor or marine/saline environments.

Thread Design

The coarse thread design of coach screws ensures a tight grip in timber and other materials, allowing them to hold heavy loads. Look for screws with sharp, well-defined threads for the best performance.

Head Type

The type of head you choose will affect both the installation process and the final appearance of the fixing. Hex heads, for example, are the most popular type of head we stock and offer easy installation with standard (non-specialised) tools. Choose the head type that best suits your application requirements and the tools you have!

Load Capacity

Choosing a fixing with the right load capacity is essential for supporting the fixture's weight. We provide load ratings with each of our different sizes and types of coach screw in different base materials, so be sure to choose an anchor that has a higher load capacity than the requirements of your project.

Base Material

What kind of base material are you installing your coach bolt into? Different coach screws are designed for use in different materials like timber, masonry or concrete, so make sure the screwbolt you choose is compatible with the base material.

Need help finding the right product?

Give our trained sales team a call on +44 (0)1905 794875, they will help you in choosing a suitable system for your needs and will also be happy to discuss discounts for bulk quantity requirements and special delivery need.

Why buy from Start Safety?

We have the full range shown above in stock on the shelf ready to ship out next day, we offer special delivery services and can even arrange same day delivery on many products.