Read about the difference between clamp and torque, and why the torqueing method of installation used in conventional fastening delivers sub-standard results.
There’s no fastener more vibration-resistant than a Huck fastener. Find out how precision engineering and a long-standing knowledge of advanced joining technology contribute to this strong advantage.
A HuckBolt is a two-piece fastener that consists of a hardened metal pin and a metal collar that swages into the grooves of the pin, forming a specific, measured clamp force to hold assembled parts together.
The Huck installation tool grips the pintail of a HuckBolt and then pulls to close the gaps in the materials being joined. Inside the nose assembly, a hardened-steel, conical-shaped anvil is then forced down the collar to progressively squeeze, or swage, the collar material into the grooves.
This direct metal-to-metal contact of the collar swaged into the grooves of the pin eliminates the loosening effects of transverse vibration.
Often installs in Under 2 Seconds
Consistent, High Clamp Force
Certified Maintenance-Free Joints
High Shear, Tensile, Pin Strength
Swage
A Huck tool squeezes, or swages, collar material into the grooves of a HuckBolt, reducing collar diameter and increasing its length. This force stretches the pin to create a consistent clamp.
Tensile strength
A swaged collar fills more pin grooves than a traditional nut has on a bolt of the same size and grade, allowing HuckBolts to deliver a much higher tensile strength.
Shear strength
HuckBolts have a higher shear strength than traditional bolts of the same size and grade because the pin is engineered with shallower grooves that results in a wider core diameter.
How Structural Blind Fasteners Work
Each Huck structural blind fastener is engineered with a unique set of features that deliver industry-leading solutions to common manufacturing challenges, from high-speed assembly, hole-filling, and water-resistance to needs for a wide grip, for welding replacement, and applications with one-sided access.
Installation is similar for each fastener type using our extensive line of Huck tooling and nose assemblies.
Huck structural blind fasteners insert through aligned holes of the materials being joined. The tool nose assembly grips the pintail, pulls the mandrel head towards the sleeve, causing the sleeve to expand or bulb on the blind side of the hole. This pulls the materials together, locks the mandrel and sleeve, and breaks the pintail flush with rivet head, all within a couple of seconds.
Huck Structural Blind Rivets form a blind side positive lock either by bulbing or expanding of the sleeve. The sleeve, assisted by the permanently secured bolt, therefore resists failure along its center line.
Bulbing
The sleeve of the fastener is compressed, causing it to fold outwards to form a bulb. This form itself tightly against the joint material. Once the bolt is permanently locked into place the pintail will break off, completing the installation.
Expanding
Pulling on the pintail causes the head of the bolt to draw into the sleeve. This expansion causes a foot print to form against the joint material.
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