Best Square Carriage Bolts of 2025

The TERF Carriage Bolts Pack includes 10 pieces of M8 (8mm) X 120mm cup square carriage bolts and nuts, perfect for various construction and DIY projects. Made from zinc plated steel, these bolts offer durability and resistance to corrosion, ensuring a long-lasting solution for your fastening needs. The mushroom/dome head type provides a neat finish and helps prevent loosening, giving you peace of mind. Remember to check your required size and quantity before purchase for the best fit.

The TERF Carriage Bolts come in a pack of 20, ensuring you have plenty for your projects. Made from zinc plated steel, these bolts provide excellent durability and resistance to corrosion, making them suitable for both indoor and outdoor use. With a size of M5 (5mm) x 50mm, they are ideal for various applications. The mushroom or dome head type gives a neat finish, enhancing the overall look of your work. Selecting the right size is made easy with a clear drop-down menu on the purchase page.

The TERF M6 Carriage Bolts are a practical choice for your fastening needs. This pack contains 10 pieces, ensuring you have enough for various projects. Made from zinc plated steel, these bolts offer excellent durability and resistance to corrosion. With a head type that is mushroom or dome-shaped, they provide a secure fit and a neat finish. Measuring 6mm in diameter and 75mm in length, these bolts are compatible with a wide range of applications, making them versatile for both DIY and professional use.

The Cheapscrews Carriage Bolts are made from grade 4.8 carbon steel, ensuring strength and durability for your projects. The dome head type allows for a secure fit, making them ideal for various applications. With a zinc finish, these bolts offer excellent corrosion resistance, prolonging their lifespan even in challenging environments. Available in multiple sizes, you can easily find the right bolt for your needs, providing convenience and flexibility for all your fastening tasks.

The Singularity Supplies Carriage Bolts are made from durable stainless steel, ensuring long-lasting performance. The mushroom dome head design provides a clean finish, making it ideal for visible applications. With a square neck, these bolts lock securely in place, preventing any loosening over time. Measuring at 5mm x 100mm, they adhere to the ISO 965 standard for tolerance, which guarantees reliable sizing and compatibility with your projects. These features offer you convenience and peace of mind, knowing your fixtures will remain secure and stable.

The SZJYG Coach Bolts offer exceptional durability as they are crafted from high-quality stainless steel, ensuring resistance to scratches, corrosion, and rust. Their unique cup square carriage design features a smooth round head that grips materials effectively, preventing the screw from loosening. With hexagonal nuts included, your installations will be more precise and secure, allowing for a stronger load capacity. These bolts are versatile and suitable for various applications, such as machinery and wood projects, making them a reliable choice for your fastening needs.

The TERF Carriage Bolts are a practical choice for your fastening needs. This pack includes four M10 (10mm) X 120mm cup square carriage bolts and hexagon nuts, ensuring you have enough for your projects. Made from zinc plated steel, these bolts are both durable and resistant to corrosion, giving you peace of mind for long-term use. With a mushroom/dome head type, they provide a secure fit that is easy to install, making your tasks simpler and more efficient.

The SZSLMY Coach Bolts offer high-quality carbon steel construction, ensuring they are scratch-resistant and corrosion-resistant. This durability means you can rely on them for long-lasting performance without worrying about rust or deformation. The practical design features a smooth rounded head and a square neck, preventing rotation during tightening, which enhances stability. With hex nuts included, your installations will be more precise, providing a strong grip and maximum clamping force for added security in various applications.

The M6 Carriage Bolts are made from durable steel, ensuring long-lasting strength for your projects. The mushroom dome head design provides a neat finish, making them ideal for visible applications. With corrosion-retardant zinc plating, these bolts resist rust, guaranteeing reliability in various environments. The bolts adhere to the ISO 965 standard, ensuring precise dimensions for a perfect fit. This means you can trust them for secure fastening in a variety of tasks.

The Singularity Supplies Carriage Bolts are designed with a mushroom dome head, providing a sleek finish that is both appealing and functional. Made from durable stainless steel, these bolts resist corrosion, ensuring longevity in various conditions. The square neck offers a locking mechanism, giving you peace of mind that your fittings will remain secure. Additionally, these metric bolts adhere to the ISO 965 standard, ensuring reliable performance and compatibility for your projects.