What is a Superbolt® Multi-Jackbolt Tensioner?
Superbolt Tensioners come in a variety of sizes and configurations. We have many stock items that are available for immediate shipment, and we also have a large shop and are able to handle custom jobs quickly. If you are experiencing bolting problems such as leakage, thread galling, unsafe working conditions, or are using expensive methods and find it difficult to properly bolt your joint, our products are the solution for you. Let's learn how they work... >>> •BONUS: Superbolt® Company History
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A "Superbolt" or "Multi-Jackbolt Tensioner" is a direct replacement for hex nuts, covered nuts, bolts, etc. They spin onto your existing bolt or stud and provide a better way to bolt up your joint. They consist of three components: 1) a hardened washer which protects your equipment and provides a hardened, flat surface for the jackbolts to "push" against. 2) A nut body which spins on your existing bolt or stud and seats against the washer hand tight (Superbolt nut bodies are typically round). 3) And Jackbolts, which thread through the nut body and are used to tighten the joint in pure tension. You tighten the jackbolts using ordinary hand tools.
If you are tightening a nut greater than 1" in diameter, you may find Superbolt tensioners useful, especially as the size of the nuts and bolts increase and the load you need to properly tighten them rises. Our products eliminate the need for time consuming and unsafe bolting equipment such as sledgehammers, hydraulic wrenches and stud heaters. For any size tensioner, all you need are simple hand tools.