Carriage screws

Transform weak connections into rock-solid joints that withstand decades of demanding use.

The Ultimate Fastening Solution for Contractors and Woodworkers

Tired of fasteners that fail when you need them most? Whether you’re building outdoor decks, sturdy docks, or critical structural connections, you need carriage screws that deliver uncompromising strength and long-lasting durability. Our premium carriage screws solve your toughest fastening challenges with professional-grade performance.

Carriage screws are generally used in applications where a smooth, finished appearance and precise alignment are important, offering reliable load capacity and shear strength for a variety of construction projects.

• Unmatched Holding Power

• Easy installation: Designed for straightforward fastening, our carriage screws can be quickly installed with standard tools, saving you time and effort

Why Choose Our Carriage Screws?

Get the reliability and performance that separates professional results from amateur work. Here’s what makes our fasteners the smart choice:

• Superior Corrosion Resistance – Stainless steel construction withstands harsh outdoor conditions for decades

• Unmatched Holding Power – Carriage bolts feature a square neck and circular head, which prevents loosening and spinning during installation

• Versatile Applications – The circular head design provides both aesthetic and structural benefits, making these bolts perfect for wood-to-wood, wood-to-metal, and heavy-duty structural connections

• Professional-Grade Materials – High-quality steel with machine threads ensures consistent, reliable performance

• Complete Size Range – Various lengths and thread sizes available to match any project requirement

Carriage bolts are sometimes referred to as coach bolts in woodworking and construction.

Carriage screws are used with nuts to ensure a secure and stable connection.

With our carriage screws, you get the strength of proven fastening technology without the complexity. Designed for contractors and serious DIYers, they deliver secure connections in minutes.

Materials and Finishes

Carriage bolts are engineered to meet the demands of a wide range of applications, thanks to the variety of materials and finishes available. Stainless steel carriage bolts are a top choice for projects requiring maximum corrosion resistance, making them ideal for outdoor structures exposed to moisture and harsh weather. For indoor or less demanding environments, mild steel carriage bolts offer reliable performance at a lower cost. When extra protection is needed, a hot dip galvanized finish provides a robust barrier against rust and corrosion, extending the life of the bolts in outdoor projects like decks, docks, and fences. Coach bolts, which are often used interchangeably with carriage bolts, are also available in stainless steel and hot dip galvanized options, ensuring you have the right material and finish for every application. Selecting the appropriate carriage bolt material and finish is essential for ensuring long-lasting, secure connections that stand up to the elements and the test of time.

How It Works

Transform your fastening challenges into professional results with our simple three-step process:

Step 1: Select and Pre-Drill Choose the right size carriage screw for your application and drill clean, precise holes. Our sizing guide makes selection foolproof.

Step 2: Insert and Position The square neck grips instantly in the hole while the smooth round head provides a clean, finished appearance. No special tools required for professional results.

Step 3: Secure and Tighten Add washer and nut, then tighten for an unshakeable connection that won’t loosen over time. Watch as weak joints transform into structural-grade connections effortlessly.

Installation Considerations

Achieving a secure and lasting connection with carriage bolts starts with proper installation. Begin by pre-drilling a hole in the mating material—this step is crucial for preventing wood from splitting and ensuring a snug fit for the bolt. The hole should be slightly smaller than the diameter of the carriage bolt to maximize holding power. Place a washer under the round head to distribute pressure evenly and protect the surface of the material. As you insert the carriage bolt, the square neck locks into the pre-drilled hole, preventing the bolt from turning while you tighten the nut. Use the correct socket or wrench to avoid stripping the threads and ensure a firm, reliable connection. For heavy duty applications, consider using lag bolts, which feature a pointed tip and coarse threads for superior grip in wood and other materials. By following these installation best practices, you’ll achieve strong, secure joints that stand up to demanding use.

What Makes Us Different?

Our carriage screws deliver advantages you won’t find with standard hardware store fasteners:

• Hot Dip Galvanized Finish – Superior corrosion protection that outlasts basic coatings

• Precision Machine Threads – Consistent threading ensures smooth installation and maximum holding power

• Multiple Head Configurations – Choose from coach bolt, lag bolt, and round head options for specific applications

Environmental Considerations

When planning outdoor projects such as decks, docks, or fences, it’s vital to consider the environmental conditions your carriage bolts will face. Exposure to moisture, temperature fluctuations, and chemicals can all impact the longevity and performance of your fasteners. Stainless steel carriage bolts are highly recommended for outdoor structures due to their exceptional corrosion resistance, ensuring your connections remain secure year after year. For even greater protection, especially in marine or high-moisture environments, a hot dip galvanized finish adds an extra layer of defense against rust and deterioration. Always match the material and finish of your carriage bolts to the specific environmental challenges of your project to guarantee a durable, reliable connection that won’t let you down.

Sizing & Options

Choose the perfect carriage screw configuration for your specific application:

🛠️ Standard Length – 2” to 6” lengths for typical deck and framing applications
💼 Heavy Duty – 8” to 12” lengths for structural and marine projects
🏆 Custom Sizes – Special lengths and diameters available for unique applications

Accurate count of carriage screws is essential for effective project planning. Customers can request specific counts or bulk orders to meet their needs.

Maintenance and Repair

To keep your structures safe and secure, regular maintenance of carriage bolts is essential. Periodically inspect each bolt for signs of corrosion, wear, or damage—especially in outdoor or high-stress applications. If you notice a carriage bolt that’s compromised, replace it promptly with a new bolt of the correct size and type to maintain the integrity of the connection. Applying a lubricant to the threads during installation or removal can help prevent seizing and make future maintenance easier. By staying proactive with inspections and repairs, you’ll ensure your carriage bolts continue to provide strong support and reliable fastening for years to come, even in challenging environments.

Common Mistakes to Avoid

To get the most out of your carriage bolts and ensure a secure, long-lasting connection, it’s important to avoid some common pitfalls. Over-tightening the nut can strip the threads or damage the head, compromising the bolt’s holding power. Using the wrong material or finish for your application—such as installing non-galvanized bolts in outdoor projects—can lead to premature corrosion and failure. Skipping the pre-drilling step in wood or other mating materials may cause splitting or weaken the connection. Always use the correct socket or wrench to avoid damaging the threads during tightening. By steering clear of these mistakes and following best practices, you’ll achieve professional results in construction, woodworking, and any application where secure, reliable fastening is a must.

Frequently Asked Questions (FAQ)

Get answers to common fastener questions before you buy:

🔹 What’s the difference between carriage screws and regular bolts? Carriage screws feature a square neck that prevents spinning and a smooth round head for finished appearance.

🔹 Do I need special tools to install these? Not at all! Standard drill, wrench, and socket set are all you need for professional installation.

🔹 Will these work for outdoor projects? Absolutely! Our stainless steel and galvanized options provide excellent corrosion resistance for decades of outdoor use.

🔹 Want to learn more about carriage screws and their applications? Contact us or visit our website to learn how these fasteners can benefit your next project.

Get Started Today

Before you choose your fasteners, it’s worth noting that carriage bolts got their name from their original use in the wheels of carriages. In the 1800s, these bolts were essential for securing carriage wheels, providing the durability and stability needed for safe travel over rough terrain.

Stop settling for fasteners that fail when you need them most. Upgrade to professional-grade carriage screws that deliver lasting results.

🔹 [Order Premium Carriage Screws Now] 🔹

💡 No more failed connections. No more callbacks. Just rock-solid results.

🔒 Quality Guaranteed | Trusted by Professional Contractors | Fast Shipping Available

Accessories and Additional Components

To achieve the best performance and security from your carriage screws, it’s important to consider the accessories that accompany them. Washers and hex nuts are essential components that enhance the fastening system’s durability and stability. Washers distribute the load evenly across the surface, preventing damage to the mating material and ensuring a tight seal. Hex nuts provide the necessary clamping force and are designed to fit perfectly with the machine threads of carriage bolts, allowing for secure tightening without slipping.

Using the correct quantity of washers and nuts is critical for maintaining the integrity of your project. For heavy-duty applications, adding lock washers or security washers can further prevent loosening caused by vibration or movement. This added security is especially important in outdoor structures exposed to weather and mechanical stress.

Additionally, carriage screws come in various inch-based sizes to fit different project requirements, making it easier to select the right length and diameter for your specific application. Whether you need a few pieces for a small repair or bulk quantities for large construction projects, having access to a comprehensive range of sizes and accessories ensures your fastening needs are fully covered.

By combining carriage screws with the appropriate washers, hex nuts, and other accessories, you maximize the strength, security, and longevity of your connections, resulting in professional-grade results every time.