A Guide to Cup Square Bolt Dimensions: Sizes & Benefits
Cup square bolts, also known as carriage bolts, are essential fasteners widely used in woodwork, construction, and engineering applications. Their unique design features a domed head and a square section beneath it, which prevents rotation when tightened. This makes them ideal for securely fastening timber, metal, and other materials where a smooth, tamper-resistant finish is required.
At Dinstock, we provide high-quality cup square bolts in various sizes and materials, ensuring durability and performance for a wide range of applications. In this guide, we will explore what cup square bolts are, their available cup square bolt sizes and cup square bolt dimensions, and the benefits of using them in your projects.
What Are Cup Square Bolts?
Cup square bolts are specifically designed for use with wood and metal structures. The square section beneath the domed head fits into pre-drilled holes, locking the bolt in place and preventing it from turning while the nut is tightened. This makes them an excellent choice for applications where a smooth, secure finish is needed.
Common industries that rely on cup square bolts include:
- Timber Construction – Used in wooden structures, fences, and furniture assembly.
- Metal Fabrication – Securing metal plates and components where rotation prevention is needed.
- Automotive and Machinery – Providing strong and reliable fastening in vehicles and equipment.
- Railway and Infrastructure Projects – Ensuring safety and durability in demanding environments.
At Dinstock, we supply cup square bolts that meet industry standards, ensuring strength and longevity in every application.
Cup Square Bolt Sizes and Dimensions
Choosing the right cup square bolt size of cup square bolts is essential for achieving the best performance in your project. Below are the standard cup square bolt dimensions available:
Metric Sizes (Diameter x Length in mm):
- M6 x 20, 30, 40, 50, 60, 70, 80
- M8 x 20, 30, 40, 50, 60, 70, 80, 100
- M10 x 25, 40, 50, 60, 70, 80, 100, 120
- M12 x 30, 50, 60, 70, 80, 100, 120, 150
- M16 x 40, 50, 60, 80, 100, 120, 150
Imperial Sizes (Diameter x Length in inches):
- 1/4” x 1”, 1 1/2”, 2”, 2 1/2”, 3”
- 5/16” x 1”, 1 1/2”, 2”, 2 1/2”, 3”, 4”
- 3/8” x 1 1/2”, 2”, 2 1/2”, 3”, 4”, 5”
- 1/2” x 2”, 2 1/2”, 3”, 4”, 5”, 6”
Cup square bolts at Dinstock are available in various finishes, including zinc-plated, galvanised, and stainless steel for enhanced corrosion resistance and durability.
Benefits of Using Cup Square Bolts
Cup square bolts offer numerous advantages across different applications, making them a popular choice in construction and manufacturing. One of their key benefits is their ability to prevent rotation during installation, thanks to the square section beneath the head, which grips securely into wood or metal. This ensures a firm and stable connection, reducing the risk of loosening over time. Additionally, their domed head provides a smooth, tamper-resistant finish, making them ideal for applications where security and a clean aesthetic are required.
These bolts are highly durable and made from strong materials such as steel, ensuring they can withstand heavy loads and harsh conditions. Their availability in various finishes, including galvanised and stainless steel options, enhances their resistance to corrosion, making them suitable for both indoor and outdoor use. Whether used in construction, automotive, or infrastructure projects, cup square bolts deliver reliable performance, ensuring long-lasting structural integrity. When selecting the right fastener for a project, it’s important to understand the various types of screws and bolts used across different applications.
Why Choose Dinstock for Cup Square Bolts?
As a trusted supplier of industrial fasteners, Dinstock offers:
✔ High-Quality Materials – Manufactured to meet industry standards for durability and performance.
✔ Wide Range of Sizes – From small to large bolts, we stock various options to suit different projects.
✔ Fast and Reliable Delivery – Ensuring your fasteners arrive when you need them.
✔ Competitive Pricing – Affordable solutions without compromising on quality.
✔ Expert Support – Our team is always available to help you select the best fasteners for your application.
Whether you need standard cup square bolts or customised fasteners for specialised applications, Dinstock is your go-to supplier. Get in touch with us today to discuss your requirements and ensure your projects are completed with the highest level of security and reliability.
