Screw Grommets for Expanded Polypropylene (EPP) Foamed Components come in two sizes fitting Delta PT® 50 and 60 screws. The series has been developed to fasten parts to foamed components, especially those made of EPP. These friction-welding bosses are effective fastening elements for EPP foams and PP honeycomb elements. Through the friction welding process these PP screw grommets are embedded in the EPP foam and securely connect to the molten material.
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RSD Series Screw Grommets

RSD Series 2 Newton Meter (N·m) Tightening Torque Screw Grommet
RSD Series Screw Grommets

RSD Series 4 Newton Meter (N·m) Tightening Torque Screw Grommet
Description N/A Screw Grommets for Expanded Polypropylene (EPP) Foamed Components come in two sizes fitting Delta PT® 50 and 60 screws. The series has been developed to fasten parts to foamed components, especially those made of EPP. These friction-welding bosses are effective fastening elements for EPP foams and PP honeycomb elements. Through the friction welding process these PP screw grommets are embedded in the EPP foam and securely connect to the molten material.
Material N/A Polypropylene (PP)
Outside Diameter N/A 22 mm
Screw Type N/A DELTA PT® 50 N/A DELTA PT® 60
Height N/A 12.80 mm
Tightening Torque N/A 2 N·m N/A 4 N·m
Advantages N/A
  • Special system for EPP foams and honeycomb elements
  • Suitable for almost all EPP foam sizes
  • High torques
  • High transmittable tensile forces
  • No pilot hole in the foam necessary
  • Easy assembly after the foam expansion
  • Assembly independent of any component tolerances
  • Clean assembly
  • Weight savings
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