Grade 5 Bolts

A Grade 5 bolt is a type of fastener that conforms to the ASTM A449 or SAE J429 standards. It is commonly made from medium-carbon steel and is designed to provide higher tensile strength compared to Grade 2 bolts.

Grade 5 bolts have a tensile strength ranging from 120,000 to 150,000 pounds per square inch (psi). This increased strength makes them suitable for applications that require more robust fastening, where Grade 2 bolts may not provide sufficient strength. They feature a coarse, standard thread pitch and a hexagonal head for easy tightening with a wrench or socket.

These bolts are widely used in a variety of industries, including automotive, construction, and machinery. They are commonly employed in applications that involve heavy loads, vibration, or mechanical stress. Grade 5 bolts are often used in automotive engines, suspension systems, and other critical structural components.

Compared to Grade 2 bolts, Grade 5 bolts offer enhanced resistance to shear forces and are more durable in demanding environments. However, it's important to note that Grade 5 bolts may not be suitable for extremely high-stress applications or those involving extreme temperatures. In such cases, higher-grade bolts, such as Grade 8 or specialty alloy bolts, may be required.

Grade 5 bolts strike a balance between strength, cost, and versatility, making them a popular choice for many industrial and mechanical applications where a reliable and sturdy fastening solution is needed.