Self-Tapping Inserts provide the best pull-out resistance for a post-mold installed Insert, yet generally cost more than their post-mold counterparts. The external threads are designed with a thin profile to minimize induced stress in the plastic and have a relative coarse pitch to provide the maximum plastic shear surface to resist pull-out. SPIROL’s Series 10 is a thread-forming Insert for soft, flexible thermoplastics.
If you would like assistance in selecting the most appropriate Insert for your application, please contact SPIROL for complimentary technical support.