Lightweight Aluminum Threaded Inserts for Plastics


Aluminum versions of SI brand threaded inserts introduce lead-free and lightweight alternatives to brass counterparts. They also offer ideal solutions to eliminate potential environmental and recycling issues while contributing to overall lighter assemblies.  


All provide durable and reusable metal threads in plastics to accept mating hardware and subsequently allow for access to an assembly whenever required.


Inserts install permanently and, unlike fixed and unyielding joining methods (such as adhesives or rivets), they ultimately offer the capability to disassemble and re-attach plastic components easily and quickly without damaging the threads, compromising attachment integrity, or otherwise adversely impacting an assembly.


Line for plastic assemblies includes:

  • ultrasonic / heat staking inserts for installation ultrasonically or with a thermal press
  • molded-in types installed during the molding process
  • press-in types installed by pressing the insert into a pre-molded or drilled hole
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