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Bolts are mechanical fasteners that consist of a cylindrical body with a head on one end and a threaded shaft that allows them to be secured with a nut. They are typically made from materials such as carbon steel, stainless steel, or alloy steel, providing strength and durability for various applications. Bolts are commonly used in construction, machinery assembly, and automotive applications to hold components together securely.
| Material | Carbon steel, stainless steel, or alloy steel |
| Standard sizes | M3 to M30 or 1/4" to 1" diameter |
| Thread type | Metric or imperial threads |
| Finish | Zinc-plated, black oxide, or plain |
| Strength grade | Grade 2, Grade 5, Grade 8, or equivalent |
| Length range | From 10 mm to 300 mm or 1/2" to 12" long |
When selecting bolts, consider the material and strength grade required for your specific application to ensure they can withstand the necessary loads. It's also important to specify the correct thread type and size, as well as any required finishes to prevent corrosion. Be sure to communicate the quantities needed and any relevant industry standards or certifications that may apply to your project.
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Bolts typically require a nut for fastening, while screws can be driven directly into materials.
Measure the diameter and length needed for your application, and consider the load requirements.
Bolts can often be reused if they show no signs of wear or damage, but it's best to inspect them first.
Common grades include Grade 2, Grade 5, and Grade 8, each with different strength ratings.
Bolts can come in various finishes such as zinc plating, black oxide, or plain for different environmental conditions.
Using a washer can help distribute the load and prevent damage to the surface being fastened.