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Carriage bolts are a type of fastener characterized by a rounded head and a square section underneath that helps prevent rotation when tightened. They are typically made from materials such as carbon steel or stainless steel, providing strength and durability for various applications. Carriage bolts are commonly used in wood-to-wood and wood-to-metal connections, making them ideal for construction, furniture assembly, and outdoor projects.
| Material | Carbon steel or stainless steel |
| Head type | Rounded head |
| Drive type | Square or hex drive |
| Diameter range | 1/4 inch to 1 inch |
| Length range | 1 inch to 12 inches |
| Finish options | Zinc plated, black oxide, or plain |
| Strength grade | Grade 2, Grade 5, or Grade 8 |
When selecting carriage bolts, consider the material based on environmental conditions and required strength. Specify the diameter and length to ensure compatibility with your project. It is also important to choose the appropriate finish for corrosion resistance. Additionally, check for any relevant certifications or standards that may apply to your specific application, and indicate the quantity needed for accurate pricing.
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Carriage bolts have a rounded head and a square neck, while regular bolts typically have a hexagonal head.
Yes, carriage bolts can be used in metal applications, especially when connecting wood to metal.
A wrench or socket for the nut and a drill for creating the hole are typically required.
Yes, carriage bolts come in various lengths, typically ranging from 1 inch to 12 inches.
Common finishes include zinc plating, black oxide, and plain (uncoated).
Carriage bolts are available in different grades, including Grade 2, Grade 5, and Grade 8.