Letter 41030

Deposit of coating on screw threads [India] 

June 7, 2006

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
- FL

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