Tag Archives: aggre-gator

Hard Facts About Hardening

Professional liability underwriters traditionally have perceived design/build as the most hazardous construction-related professional liability exposure. The combination of design activity, on-site supervisory presence and active participation in the actual construction add up to a high degree of control over an entire construction project. This greatly increases the probability that any problems with the ultimate result will be attributed to the design/builder. Flex Technology allows design/building professionals to manage risk and enhance the performance of critical connections.

When designing structural connections between dissimilar metals, attention must be paid to the galvanic reactions. If hardened-steel parts such as self-drilling screws are used for the connection, hydrogen assisted stress corrosion cracking is also a possibility.

Flex Technology fasteners with corrosion-preventative coating can avoid these dangers and protect the integrity of the structure. In exterior applications or aggressive interior environments, bi-metallic or super alloy fasteners are recommended.

For use in critical and dissimilar metal applications, windows, doors, curtain wall systems and solar panel racking systems to prevent fastener failure, the Flex Technology family of products surpasses any standard fastening format available.

The Flex Technology Product Line

For Metal Applications

Dril-Flex® Structural Drill Screws

Tap-Flex® Structural Tapping Screws

Bi-Flex® 300 Series Stainless Steel Self Drilling Fasteners

For Concrete Applications

Aggre-gator® 300 Series Stainless Anchors

For Aluminum Applications

Alumi-Flex™ Stainless Steel Drill Screws

• AllFlex™ Stainless Steel Tapping Screws

Stalgard® High-Performance Protective Coatings

Stalgard® is a durable, multilayer, corrosion-resistant coating, engineered to provide optimal performance in demanding construction applications.

Tanner offers several quality fastening products that are coated with Stalgard® finish.  Fasteners coated with Stalgard finish typically show no red rust or other base metal corrosion on significant surfaces even after 800 hours of 5% neutral salt spray exposure (ASTM B117).


Tanner  fastening products with Stalgard Corrosion Resistance Finish:

UltraCon Concrete Screws

Drill-Flex Structural Self-Drilling Screws

Crete-Flex Stainless Steel Concrete Screws

Bi-Flex 300 Series Stainless Steel Self Drilling Screws

Aggre-Gator 300 Series Stainless Steel Bi-Metal Concrete Anchors


300 Series Stainless Steel Fasteners

Two new products have caught my eye recently, both 300 series stainless products with unique features. If your job requires fastening and anchoring in exposed, wet areas, coastal, aggressive environments these products are for you.

Bi-Flex™ Bi-Metal Self-Drilling Fasteners combine 300 series stainless steel corrosion resistance with the convenience of self-drilling.

Aggre-Gator™ 300 Series Stainless Steel Bi-Metal Concrete Anchors feature bi-metal technology: a 300 (18-8) stainless steel head and shank fused to hardened steel tapping threads and gimlet point.

Bi-flex-Aggre-Gator (PDF)