Alloy Fasteners is one of the largest stocking distributors in the United States for the Dewalt and ELCO Flex Technology fastener brands. These products’ quality, design, and reliability have been the gold standard in the construction market. Alloy’s decades of superior service in the curtainwall industry, tied with the Dewalt/ELCO product lines, make Alloy a natural fit for your fastener needs.

Dewalt/ELCO brands of fasteners offer multiple materials, coatings, and applications. From DrilFlex Tek Screws to AggreGator Concrete Anchors, we have you covered. Alloy distributes other Dewalt lines, such as drill/driver bits, adhesives, etc. Their Stalgard GB coating protects against galvanic corrosion and adds lubricity during the drilling and taping processes.

Alloy Fasteners, one of the largest United States distributors of Flex Technology products, is the knowledge leader for this product line. Our experienced product experts can conduct a detailed Lunch and learn about Flex Technology for your team, instilling confidence in our ability to eliminate the possibility of fastener failures on your projects.

Over the last five decades, Elco Construction Products has developed Flex Technology® fasteners which are immune to hydrogen-induced failures. This is achieved using unique alloy materials and proprietary heat treatment processes. The result is fasteners that designers and systems manufacturers can utilize to enhance the performance of critical connections. When choosing fasteners for a curtain wall component, it’s crucial to apply special attention to prevent fastener failures. Standard case-hardened fasteners, while suitable for steel-to-steel applications or in dry zones, are vulnerable to delayed embrittlement failures. These failures are brought on by hydrogen, which is generated in aluminum and steel connections in the presence of moisture. This moisture can be from environmental exposure, condensation, or humidity. The presence of hydrogen will attack fasteners with a core hardness greater than RC34 and cause the fastener to become embrittled. The result is a loss of design loads, and fasteners will break, causing joint failure.

Three conditions need to be met to experience this condition.

1. A hardened fastener with a Rockwell core hardness greater than RC34.

2. Applied load or stress on the fastener.

3. The presence of moisture.

Once all three conditions are met, fasteners will fail. This failure can be in the form of leakage or panels separating from the building’s structure and falling to the ground.

Below are some commonly used product lines in the industry, along with links to the brochures and specifications you need to choose the suitable fastener for your application.