Huck® 360 Powerbolt (360 Nut and Bolt Fastening System)

General Information for the Alcoa® Huck® 360 Powerbolt

The engineered nut-and-bolt fastening system from the leader in vibration-resistant fastening, Huck.

The goal was simple: to design a high-strength bolting system that resists vibration loosening, no matter how extreme the environment.

Available in:
3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-3/8", 10mm, 12mm, 16mm, 20mm, and 36mm. This system should offer quick installation and removal with conventional tools, deliver superior fatigue strength, and hold tight under high spike loads.

The result is the Huck® 360, the most advanced nutand-bolt fastening system you'll find on the market today.

Easy-to-install, the Huck® 360 fastening system is engineered to be virtually maintenance free and resistant to vibration, even under extreme conditions.

The Huck® 360 Powerbolt's Design is the Difference

Huck® 360 stays tight under severe vibration loading by eliminating the "gap" around the crest of the bolt.

When tightened, the Huck® 360 fills this gap, which prevents transverse motion between the 360 nut and bolt, keeping the assembly in place.

Huck® 360
Thread Flanks are Locked. Nut cannot move relative to bolt. Conventional Thread
Thread Flanks can slide. Nut can move relative to bolt.

Transverse Vibration Comparison

This chart shows that once vibration begins, clamp load quickly decays with conventional nuts and bolts, while it holds constant with Huck® 360.

Increased Life

Because the Huck® 360 was designed with shallow, low-notch factor bolt threads (the grooves aren't rolled as deep as a conventional bolt), the effective area of the fastener itself is widened by as much as 20%, increasing tensile and fatigue strength.

In fact, the Huck® 360 thread delivers 5 times the fatigue life of a standard thread bolt.

Note: Huck 360® is a registered trademark of Alcoa and Alcoa Fastening Systems.