Maintenance-free, high-strength mechanical fasteners for extreme applications through advanced HuckBolt® technology Free-s Absor Vibration a

ABSTRACT Alcoa Fastening Systems & Rings has for many years produced innovative mechanical fastening technologies. In the 1940s, Louis C. Huck, the founder of Huck Fasteners, developed the very first HuckBolt® system. The functionality of this system is based on cold forming/extrusion technology, where a collar is swaged during installation by a specialized tool called an anvil into locking grooves. The fastener is mechanically locked due to the annular locking grooves being filled with collar material. The result is a high-fatigue-life joint with unparalleled vibration resistance and clamp/pre-load...

OVERVIEW The Huck 360® System is an engineered high-strength, vibration-resistant nut-and-bolt fastening system that offers quick installation and removal with conventional tools. With superior fatigue strength, it holds tightly and securely under extreme conditions such as high spike loads. Made of low-carbon steel and available in HuckGuard or Geomet finishes (depending upon size), it is engineered to be virtually maintenance-free. The Huck 360® stays tight under severe vibration loading by eliminating the “gap” around the crest of the bolt (Figure 1). When tightened to a specific clamp force,...

OVERVIEW (continued) increase equipment uptime and productivity. A Huck 360® nut and bolt is 100% reusable: It can be retightened, and can be reused, provided the nut and bolt set remains free-spinning after removal and reuse, with the same torque requirements as the initial installation. The Huck 360® is available in eight Imperial sizes: 3/8-inch, ½-inch, 5/8-inch, ¾-inch, 7/8-inch, 1-inch, 1-1/8-inch and 1-3/8-inch. Twelve Metric sizes are available: 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 27mm, 30mm, 36mm and 42mm. For all installations, hardened washers are recommended. TEST RESULTS...

High Strength Lock Bolt Lock Bolt Clamp Load The Huck 360® system is designed for numer- ous applications where high-strength, vibration- resistant and low-maintenance is required. These include rail (i.e., special trackwork and rail joints) and railcars, steel construction, trucks and trail- ers, agricultural harvest machinery, motor ve- hicles, mining, construction machines and exca- vators, and the repair market, where conventional fastening systems have failed. BNSF Railway began evaluating the new Huck 360® HuckBolt® for track applications in June 2013 at the Opal Diamond in Temple, Texas...