Spirol is pleased to announce the launch of its newest machined Aluminum Threaded Inserts, designed for heat or ultrasonic installation into straight plastic holes. The newly released Series INS19, INS20, INS29, and INS30 expand Spirol's industry‑leading Threaded Insert offering and complement the existing brass product line, providing customers with greater flexibility in material selection and performance optimization.

The four new Aluminum Threaded Inserts Series complete SPIROL’s comprehensive Aluminum Insert portfolio, offering solutions across the most commonly used installation methods, including Molded-In, post-mold (cold) Press-In, and Heat/Ultrasonic installation. Heat and ultrasonic installation methods locally remelt the surrounding plastic, enabling improved material flow into the Insert’s undercuts and knurls, increasing torque resistance and pull-out performance in the plastic assembly compared to Press-In Inserts.

Why Aluminum?

While brass remains the industry standard for machined Threaded Inserts for Plastics, 2024 aluminum delivers compelling advantages for modern product designs. Aluminum provides significant weight reduction - approximately 1/3 the weight of brass - making it an ideal choice for lightweight applications and weight-sensitive assemblies.

In addition, 2024 aluminum is a lead-free alloy, supporting evolving environmental, health, and safety requirements across global markets. Its galvanic properties also provide increased application flexibility when mating with dissimilar materials compared to traditional brass Inserts.

From a performance standpoint, the high strength of 2024 aluminum enables improved joint integrity with less thread engagement, while delivering enhanced load-bearing capability. These attributes can contribute to more efficient designs, reduced assembly complexity, and improved overall performance.

With this new product launch, Spirol continues to deliver innovative fastening solutions that help customers reduce assembly costs, improve performance, and meet evolving design and regulatory requirements.

For more information or to request samples, please contact your local Spirol office or visit our website.