TIFAS^® Lockbolt Multigrip The lockbolt system with very large grip range.

Lockbolts are ideal for permanently and securely fastening two parts together so that they will never detach, even when subjected to preload or dynamic load.

Unlike the standard lockbolt system, the TIFAS^® LockBolt Multigrip pin and collar system does not have a predefined breakload. The breakoff force for the pin tail can be set variably within a predefined range, whilst the pin offers a very large grip range for the parts to be fastened. The breakneck groove is always located just before the end of the collar. As a result, the pin on the steel version will not protrude at the fastening point in spite of the compensatory tolerance this design offers

Even when subjected to vibrations, the applied clamp force remains constant. As a positive locking device that fastens permanently with the bolt, the collar is impossible to remove.

Installation steps

1. Select lockbolts based on the specified requirements as well as the clamping thicknesses available on-site (sum total of all wall thick- nesses to be installed)
2. Select the installation tool, incl. pulling head that matches the lock- bolts to be installed (for details, see “Overview – Lockbolts” in the “Tools for Lockbolts” catalogue)
3. Insert the bolt into both through- holes on the components and, with the chamfer aligned to the end of the bolt, slide the collar over the lockbolt. (Fig. 1)
4. Fully press the installation tool with attached pulling head against the collar while securing the pin in place from the opposite side to prevent it from being poked out. (Fig. 2)
5. Press the trigger on the installa- tion tool. The jaws then grip into the grooves on the pin tail and tug at the pin. The pulling head sleeve presses up against the components and the resulting clamp force pushes them together. (Fig. 3)
6. As the tool continues to pull, the pulling head sleeve slides over the collar. (Fig. 4) This reduces the ex- ternal diameter of the collar. The compressed material slides into the locking grooves of the bolt to form the desired positive fit. As the front side of the sleeve elonga- tes, it is pushed up against the component to create the desired preload where the parts connect.
7. The tool will continue to pull until the lockbolt's breakload is achie- ved, causing the tip of the bolt (pulling head) to snap off at the end of the collar (steel version). Installation is now complete. (Fig. 5)

Composition (Fig. 6)

1. Brazier or countersunk head
2. Smooth pin shank
3. Locking grooves into which the collar is swaged
4. Pin tail (for installation tool)
5. Flanged collar with cone-shaped tip