How Huck Structural Blind Fasteners Work 

Click to download the How Huck Structural Blind Fasteners Work Brochure from Star Fasteners

Huck® structural blind (one-piece) fasteners are available in a variety of materials and sizes. Similar to HuckBolts®, these advanced fasteners are also installed using a direct tension swaging technique. And like the installation of HuckBolts, this process provides for both a fast and secure installation. Similarly, a quick visual inspection is all that is required to confirm their proper installation, adding to the speed of assembly associated with these advanced fasteners.

The shear strength of structural blind fasteners is generated by the combined resistance against failure of the pin and sleeve. This takes place along the joint’s shear line between fastened plates.

The tensile strength of structural blind fasteners differs to that of LockBolts, as they form a blind side positive lock either by bulbing or expanding of the sleeve. The sleeve, assisted by the permanently secured pin, therefore resists failure along its centre line.

• Bulbing - The sleeve of the fastener is compressed, causing it to fold outwards to form a bulb. This forms itself tightly against the joint material. Once the pin is permanently locked into place the pintail will break off, completing the installation.

• Expanding - Pulling on the pintail causes the head of the pin to draw into the sleeve. This expansion causes a foot print to form against the joint material.

Over the past 30 years, Huck structural blind fasteners from Howmet Fastening Systems (HFS) have become the fastening option of choice for a number of demanding applications. Today, Huck structural blind fasteners have become the preferred joining method for a wide range of applications where welding, nuts and bolts, and other joining methods were once regularly employed.

The Huck blind fasteners range includes Auto-Bulb®, BOM®, FloorTight®, HuckLok®, Magna-Bulb®, Magna-Lok®, Magna-Lok MX®, Magna-Tite®, and Penta-Lok™.

Specialists in the supply of Huck Fasteners, Star Fasteners are proud to be the UK’s largest Huck fastener distributor. Working with a diverse range of end users and distributors from across a number of industries.
We are also an accredited Huck tool service and repair centre; expert technical knowledge and a large tool hire fleet complements the service.

For more information on our products and services, potential applications, tips, ideas and product news, follow along on our social media platforms Facebook: @starfastenersuk and @starfasteners LinkedIn, Twitter, Instagram.


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