Lockbolt vs. Bolt

A lockbolt is a type of fastener used in heavy-duty applications where high tensile strength and vibration resistance are required. It consists of a pin and collar assembly. The pin is inserted into pre-drilled holes in the materials being joined, and the collar is then placed over the pin. Using specialized tools, the pin is pulled, causing the collar to expand and lock the pin in place, creating a strong and secure connection. Lockbolts are commonly used in construction, aerospace, automotive, and other industries where structural integrity is critical.

Our customers often ask the difference between lockbolts and regular bolts. Let's talk about it today.

1. Installation Speed and Process Complexity

Lockbolts generally have a faster installation speed compared to bolts because installing lockbolts typically only requires applying pressure to insert the lockbolts into the material, while bolts require the coordination of nuts and bolts, which is relatively more complex.

2. Preload Force and Loosening Protection

Bolts can control the tightening degree of the connected parts by adjusting the preload force of the bolt, while lockbolts typically have better anti-loosening performance because they deform within the groove during installation, increasing the tightness of the connection.

3. Weight and Volume

Lockbolts are typically lighter than bolts of the same strength because lockbolts themselves are relatively simple and do not require additional nuts and washers, making them more advantageous in applications where weight and volume are limited.

4. Applicable Materials and Environments

Bolts have good adaptability to various materials and different environmental conditions, while the application scope of lockbolts may be limited by the type of material and environmental conditions.

5. Reliability and Durability

Generally, lockbolts are more reliable than bolts in harsh environments such as vibration and impact because the design of lockbolts enable them to better withstand external forces, while bolts may require additional anti-loosening measures in vibrating environments.

6. Disassembly and Maintenance

Bolts are easier to disassemble and replace compared to lockbolts because bolts can be connected and disconnected by tightening and loosening, while lockbolts typically need to be drilled out or sheared off with special tools for disassembly.

Lockbolts are more and more widely used in the industry, no matter stainless steel lockbolts or carbon steel lockbolts. Borie Fasteners is a leading rivets factory, keeping a lot of sizes in stock to meet the different needs of our customers. If you need some quotation or information of lockbolts, please do not hesitate to contact us!