New Molded-in Aluminum Threaded Inserts Consist of Multiple Bands of Helical Knurls

Press Release Summary:

  • Series 63 and series 65 molded-in inserts are lead free, 40% strong than brass and 1/3 the weight of the same Insert manufactured from brass
  • Metric thread sizes include M4, M5, M6 and M8 and inch threaded sizes include 8-32, 10-24, 1/4-20 and 5/16-18
  • Designed to be placed in the mold cavity prior to plastic injection and offer high performance due to unrestricted plastic flow into the retention features on the outside diameter of the inserts

Original Press Release:

SPIROL Launches New Series of Molded-in Aluminum Threaded Inserts for Plastics

SPIROL is pleased to introduce a new, high-performance series of Molded-In Inserts for plastics assemblies. The rugged design of the Series 63 Through Hole Inserts and Series 65 Blind End Inserts consists of multiple bands of helical knurls to maximize torque resistance, balanced with radial undercuts to achieve high pull-out (tensile) force. These Molded-In Inserts are designed to be placed in the mold cavity prior to plastic injection, and offer exceptional performance due to unrestricted plastic flow into the retention features on the outside diameter of the Inserts.

These lightweight, lead-free Threaded Inserts for Plastics are manufactured from 2024 grade aluminum which provides the best combination of strength, corrosion resistance, machinability and cost. The Series 63 and Series 65 Molded-In Inserts are lead free, 40% stronger than brass, and 1/3 the weight of the same Insert manufactured from brass. Standard metric thread sizes include M4, M5, M6, and M8, and standard inch threaded sizes include 8-32, 10-24, 1/4-20, and 5/16-18.

SPIROL offers a comprehensive line of Inserts for Plastics including Press-In, Self-Tapping, Heat / Ultrasonic and Molded-In styles to accommodate specific performance and installation requirements! Learn more about SPIROL Inserts for Plastics, design guidelines for the plastic components that use Inserts, proper installation methods and performance testing parameters in their full Inserts for Plastics design guide on SPIROL.com.

Involve SPIROL in the design stage of your next project and their Application Engineers will not only recommend the most cost effective Threaded Insert for your plastic assembly, but they will also help make the critical design recommendations between their engineered fastener and your assembly.

SPIROL International Corporation is a leading manufacturer of a diverse line of engineered components for fastening and joining, including Coiled Spring Pins, Slotted Spring Pins, Solid Pins, Disc Springs, Alignment Dowels and Bushings, Spacers, Compression Limiters, Threaded Inserts for Plastics, Precision Shims, and Installation Equipment. SPIROL can be found on 4 continents within the following 12 countries: Brazil, Canada, China, Czech Republic, England, France, Germany, Mexico, Poland, South Korea, Spain, and the United States. Since 1948, SPIROL has been providing technical expertise in fastening, joining and assembly to the world's leading manufacturers.

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