Best Standards/Guidelines for Driving Screw into Plastic?
Best Standards/Guidelines for Driving Screw into Plastic?
(OP)
Hi all,
My first post here, so I am not sure of forum etiquette, I will try to provide all necessary background to my question.
I am currently looking for a standard/guideline that I can use to determine the best driving torque for a screw. This is for an application where a hi-lo screw is being driven into a plastic stand-off. The two pieces being driven together are a sheet of metal, and a sheet of plastic which has the previously mentioned plastic stand-off molded onto it.
Not looking for a super specific solution, although if someone is willing to take a crack at it I can provide more details. I was more wondering if there exists some sort of literature that can be used to find a solution to my question.
Thank you,
Ray
My first post here, so I am not sure of forum etiquette, I will try to provide all necessary background to my question.
I am currently looking for a standard/guideline that I can use to determine the best driving torque for a screw. This is for an application where a hi-lo screw is being driven into a plastic stand-off. The two pieces being driven together are a sheet of metal, and a sheet of plastic which has the previously mentioned plastic stand-off molded onto it.
Not looking for a super specific solution, although if someone is willing to take a crack at it I can provide more details. I was more wondering if there exists some sort of literature that can be used to find a solution to my question.
Thank you,
Ray
RE: Best Standards/Guidelines for Driving Screw into Plastic?
However, if the plastic is polycarbonate, the stress crested by the interference fit alone will cause the parts to crack with age. I suggest a different fastening method for polycarbonate.
RE: Best Standards/Guidelines for Driving Screw into Plastic?
https://www.ejot.com/Industrial-Fasteners-Division...
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: Best Standards/Guidelines for Driving Screw into Plastic?
Maximize material on plastic standoff.
Each screw has its own spec'd hole diameter. 99% of the time, you want exactly that.
Room temperature is best.
Make sure you have adequate lead-in, enough thread engagement, and space for chips to fall.
Use the bigger screw. You won't regret it.