Types of screws for plastic

The table below offers a guide to select the screw to be use based on the type of plastic to be assembled. Field tests will determine the optimal solution based on hole geometry, mechanical requirements and installation parameters. 

The type of plastic is determined by its Bending Modulus:

• Ductile plastics 20.000 kg/cm²
• Medium plastics 21.000 - 30.000 kg/cm²
• Hard plastics 31.000 - 70.000 kg/cm²
• Very Hard plastics 70.000 kg/cm²