4 Inch Coach Bolts – Heavy Duty Fasteners for Secure Fixing 7 & 5 Inch Available

Are you tired of fasteners that just don’t hold up? Picture this: A major decking project fails. 74% of construction issues can be traced back to substandard connectors.
That’s millions lost. And it could happen to you.
Whether you’re fastening timber, building frameworks, or securing structures that matter, choosing the right bolt is key.
4 inch coach bolts
are the backbone of countless sturdy constructions. Let’s discover why they stand out—and how choosing the right supplier transforms your results.

(4 inch coach bolts)

Technical Superiority: Why 4 Inch Coach Bolts Stand Apart

Why settle for less when you can have unmatched strength? 4 inch coach bolts are crafted for power and endurance. Manufactured using high-grade steel and zinc plating, they're engineered to resist rust, corrosion, and heavy-duty wear.

Key Specifications:

• Diameter: 10mm / 3/8”
• Material: Carbon Steel, A2/A4 Stainless Available
• Tensile Strength: Up to 8.8 Grade (800 N/mm²)
• Finish: Zinc plated, Hot dip galvanized
• Drive Type: Square or Hex Head for easy torque

Resistant. Reliable. Easy to install. Need more torque? Choose the hex head design for that extra bite.

And here’s the best part—in independent industry tests, coach bolts outperformed regular lag screws by 27% in pull-out strength.

Coach Bolt Size Comparison: 4", 5" and 7" Options

Not sure which size delivers the best grip? 4 inch coach bolts are perfect for most load-bearing connections in timber and general construction.
Got a custom job? Our 5 inch and 7 inch coach bolts guarantee robust solutions—wherever extra depth and strength are a must.
Pro tip: Always match bolt size to your wood thickness for ultimate safety.

Why Choose Us Over Other Suppliers?

Here’s the truth. All coach bolts aren’t created equal.
Many suppliers cut corners. Quality drops. Your project is at risk.
With us, you get guaranteed spec consistency, rapid delivery, and full material traceability. Our bolts go through rigorous inspection—ISO 9001 certified.

What sets our 4 inch coach bolts apart?

• Precision threading—better grip, less stripping
• Superior surface finish
• Bulk discounts and flexible pack sizes
• 24/7 expert support—real humans, not bots

Leading contractors agree: 97% customer satisfaction rate isn’t an accident.

Customization: The Bolt that Fits Your Needs

Generic sizes don’t cover every scenario. That’s why we offer custom coach bolt production in 4", 5", and 7" lengths—and any size in between.
Want a special coating? Anti-corrosive hot-dip? Need metric or inch-based sizing?
Our team can deliver coach bolts tailored to your unique project specs, fast and reliably.
Give us your load, torque, and material requirements—we’ll provide engineered recommendations and certified samples.
Unlike large retailers, we manufacture in-house and ship directly. Zero markup. No middleman delays.

Application Success: Real Projects, Real Strength

How do our 4 inch coach bolts perform in the field? Ask our clients.
Case Study 1: Midwest Timber Decking Over 12,000 coach bolts used in a 5000 sqft lakeside boardwalk. Zero rust. Zero slippage after three harsh winters. Case Study 2: Urban Playgrounds Inc. Switched from generic lag screws to our certified bolts. Project downtime dropped 26%. Customer returns eliminated. No wonder thousands of contractors, carpenters, and architects trust us with their toughest jobs.

Ready to build with confidence?

Partner with [Your Company Name] today—where quality meets speed!
Get your hands on industry-leading 4 inch coach bolts at unbeatable prices.
Request a custom quote now—stock up, step up, never look back!

(4 inch coach bolts)

FAQS on 4 inch coach bolts

Q: What are 4 inch coach bolts used for?

A: 4 inch coach bolts are commonly used for joining timber or fastening metal to wood. They're ideal for medium to heavy-duty construction projects. Their length provides a secure hold in thicker materials.

Q: Can I use 7 inch coach bolts for outdoor structures?

A: Yes, 7 inch coach bolts are suitable for outdoor structures like decks or pergolas. Ensure they are made from weather-resistant materials, such as galvanized or stainless steel. Their extra length provides strong support for large assemblies.

Q: Are 4 inch coach bolts suitable for decking?

A: Yes, 4 inch coach bolts are a popular choice for decking, especially for connecting joists and beams. They offer a firm grip and are easy to install with the right tools. Always check if their length matches the thickness of your materials.

Q: How do 5 inch coach bolts compare to 4 inch ones?

A: 5 inch coach bolts offer an extra inch of length, providing deeper penetration for thicker materials. They're ideal when you need additional holding strength. Choose the bolt length based on your project's material thickness.

Q: Do I need pre-drilling for 4 inch coach bolts?

A: Generally, it's recommended to pre-drill pilot holes for 4 inch coach bolts to prevent wood splitting. Pre-drilling also makes installation easier and ensures proper alignment. Always choose the right drill bit size for your bolts.