Inspection Gaging - Installation Sequence

Typical of all head styles

Step 1

The pin is inserted into the hole, if interference is required the pin be pushed in with a rivet gun or pulled in with a Huck pull-in tool system. The Collar is then places over the pintail.


Step 2

The Huck installation tool with nose assembly is placed onto the fastener. The tool is actuated causing the nose assembly to pull on the pin and push on the collar. This action seats the head of the fastener and begins swaging the collar material into the pin’s locking grooves, providing a permanent lock between the pin and collar


Step 3

Continued swaging of the collar forces the collar to stretch in length, resulting in a corresponding stretch of the pin. This precise lengthening of the pin and collar is what causes the high consistent clamp-up of the GP Lockbolt system.


Step 4

When collar swaging is complete, the tool continues to pull until the pin separates in tension (at a pre-determined force) at the break neck groove. The tool trigger is then released and the nose assembly with tool is pushed off the installed fastener, completing the installation cycle.