Hello,
I`m currently developing a new kind of product, which (hopefully) will be used in the construction industry. It is an hand-held tool/accessory that should make the job of the construction workers a little bit more comfortable.
Anyway, as the initial production volume will be rather small, I have to use machined plastic parts (rather than moulded ones). The plastic used is POM-C (Ertacetal).
In the first prototypes I made, I used standard metric metal screws to assemble the tool and it actually performed quite well (the forces that work on the threaded connection are marginal).
But on the longer run I wan`t to use screws made specifically for plastic applications. These should offer a even better holding force and they do not require a tapping operation in the machining process.
But the question is which kind of screws (for plastic) to use because there are many different options on the market? Or a more fundamental question would be whether to use thread-forming or thread-cutting
screws, taking to account that the tool needs to be dissassembled about 10 times during its life cycle (for cleaning and maintenance)?
Any kind of recommendations and comments on the subject are welcomed!
Best regards,
Peter