Letter 41030

Deposit of coating on screw threads  

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We are doing Dacro Coating by Dip Spin process. We are facing problem with coating deposit on screw threads which results in gauge not qualifying.

Sanjay Chitlangia
aum dacro - Gurgaon, India

You really should be talking to the Mfg's tech services. It depends on what you call a screw also. You can not expect to coat a 10 x 40 one and have it pass. A half inch bolt is another story.
Basically, if it is possible, it sounds like a thinner material that you are dipping in and a faster or longer spin, possible sooner.

James Watts
- Navarre, Florida

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