How Huck Bolts Work

What Are Huck Bolts And How Do They Work?

Huck bolts work differently to threaded bolt & nut, as they are installed via an industrial tool that provides a permanent solution. This makes them ideal when seeking a vibration resistant solution. 

Huck bolts consist of two pieces: a threaded pin and a collar. Fit the Huck bolt pin in the pre-drilled hole. The pin diameter should match the hole size for a tight fit to prevent lateral movement that could weaken the joint.

Fit the Huck bolt collar on the side opposite from the pinhead. The collar fits over the pin and will form a strong, lasting joint when the collar  is swaged into the pin via an industrial tool, the tool presses the softer material collar into the pin making the two-pieces into a one-piece combo.  

In the initial stages of the installation process, the Huck gun engages & pulls on the pin, whilst the nose assembly is forced down the collar. Progressively the tool, swages the collar into the grooves of the harder steel pin. The pin and swaged collar are now combined  to maximise metal-on-metal contact so, unlike a nut and bolt, it cannot work loose. The tensile strength of the Huck bolt is dictated by the number of grooves that are filled.

How Do Huck Rivets Work?

Huck structural rivets are installed differently to Huck bolts, however the vibration resistant end solution is the same. Rivet's body (wide section) is inserted through a drilled hole, whilst the protruding pin tail, along with its associated cap is subsequently pulled up with a riveting gun. This process results in the body deforming on the blind side & locking into place. The rivet's body & the pin cap have now interlocked with the material, its this interlocking process that makes structural rivets different from standard rivets.    

When a structural rivet is installed, the body deforms by one of the following processes. 

Compresses & Bulging

The body of the rivet collapses by the pin cap, causing it to compress and bulge, resulting in a bulb against the material.

Broadening of the Body

Body of the rivet is widened when the cap of the pin is pulled up, resulting in the body expanding against the material.

Folds and Splits

Slotted body rivet folds and split into a propeller shape blind–side anchor, ideal for lightweight material.   

Monobolt® Vs Magna-Lok®

These different brands of structural rivets have many different characteristics however they have same end result. The takeaway difference is Magna-Lok does not require a special structural nose tip to be installed correctly, unlike the Monobolt which requires a special nose tip. Huck’s locking mechanism has been engineered into the rivet to eliminate tooling and operator error. 

Structural Rivets Types

There are predominately three type of structural rivets:

1. Huck rivet Magna-Lok, Monobolt; (Broadening of the body, wide material grip range along with great strength)

2. Allok Rivets, Huck Rivet MB, Hemlok, BOM; (Compresses & bulges, limited material grip range along with greater strength than body broadening)

3. Bulb-Tite, Tri-Bulb (Folds and splits into a propeller shape blind–side anchor, multi-grip range along with okay strength)