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PEM® TK™ TackSert® Stainless Steel Pins Offer Alternatives to Screws for Attaching Thin Panels

Product Updates

PEM® TK™ introduces new stainless steel TackSert® pins from PennEngineering®. These pins are an ideal alternatives to screws for attaching thin panels in assemblies. Panels of any material can be securely attached to base panels manufactured from common casting materials (such as AZ91D) or plastics (such as ABS and printed circuit boards). This product's unique design aspects promote reliable performance in service.

Unlike screws, PEM TK TackSert pins screws eliminate any need for mating threads from tapped holes or inserts. They also avoid the rework frequently required due to screw cross-threading and driver bit “cam-out.”  There is no need for patches intended to prevent fastener loosening in service with these pins.

Design features include:

  • a low-profile head which minimizes protrusion on the attached panel,
  • a specially engineered diagonal broaching knurl (instead of threads) which creates a firm interference fit without the issues associated with hole-tolerance
  • a tapered tip which assists in pin location to enable easier alignment into a base panel.


Offered in a variety of lengths, these pins can successfully attach sheets with thicknesses from .067” / 1.7mm to .185” / 4.7mm, depending on pin length. For plastic bases, simple press-in installation without using heat or ultrasonics is performed by preparing properly sized mounting holes in the top sheet and base panel, placing the pin through the hole in the top sheet and into the through or blind mounting hole of the base panel, and then applying sufficient squeezing force using punch and anvil until the head of the pin contacts the top sheet. Pins can even be installed automatically for high-volume jobs.

For free detailed specifications, fastener drawings and 3D models, and performance data (Bulletin TK), visit www.pemnet.com.

To access more information, visit www.pemnet.com, email: info@pemnet.com, or contact Michael J. Rossi, PennEngineering®, 5190 Old Easton Road, Danboro, PA 18916-1000 USA.Phones: +1-800-237-4736 (toll-free in the U.S.) and +1-215-766-8853.