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Bolt grades indicate the material strength and are typically marked on the bolt head. Higher-grade bolts, such as Grade 8, are made from stronger materials and can withstand greater stress, making them suitable for high-stress applications.

Selecting the correct bolt size involves considering the diameter, length, and thread pitch. Referencing the equipment's service manual or consulting with a professional can ensure proper sizing.

Washers distribute the load of the bolt across a larger surface area, preventing damage to the material and reducing the risk of the bolt loosening over time.

While some bolts can be reused, it's generally recommended to replace critical bolts, especially those subjected to high stress or torque, to maintain safety and integrity.