Screws for plastics have a thread that is designed to be used in soft materials. It has several flank angle threads that slice easily through different plastic materials, offering high pull out performance without inducing high stress levels.
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- Product characteristics
- Product types
Plastics continue to open up a world of design opportunities, yet present some unique fastening problems.
Each type of plastic has its own set of performance issues, such as ductility, thermal expansion and clamp retention. Selecting a fastener that can best match these requirements is critical to the overall performance of an application.
Plas-Tech® 30 Screws
The high performance Plas-Tech 30 screw is a direct screw fastener that is designed for use in thermoplastics.
Its design characteristics include numerous innovations, such as a profiled thread root to assist plastic flow and stress reduction; a 30-degree flank angle to reduce boss bursting forces and an 8-degree pitch angle. Taken together, these features support low installation torques with high stripping torque values.
Polymate 40
The polymate 40 is a high performance Metric thread forming screw for plastics available with a Supadrive® and Torx® recess drives and Countersunk and Pan head styles as standard.
A wide variety of plastics are now available in the market place. These vary considerably in their hardness, susceptibility to cracking and stability to temperature and humidity variations
Plas-Fix 45 Screws
The Plas-Fix 45 is a trilobular bodied, high performance Metric thread forming screw for plastics available with a Supadrive® and Torx® recess drives and Countersunk and Pan head styles as standard.
A wide variety of plastics are now available in the market place. These vary considerably in their hardness, susceptibility to cracking and stability to temperature and humidity variations.
Plas-Fix® 60
The Polymate 60 is a trilobular bodied single start screw with a 60° angle thread form designed for installing into Nylon, Acetal, ABS and some glassfibre filled nylons.
BS4174
High – low
A thread forming screw with a double-lead, consisting of a low and a high thread. The lower thread varies in height from 1/3 to 1/2 that of the high thread, which is sharper and flatter than a standard thread.