Presently after tightening the screw with an Electric screw driver, we apply oil 
paint (partly on screw & partly on the nut) for verification. 

Now we are thinking of automating the process, in which screwing operation 
will be done automatically, we are also planning for auto-application of paint. 
The paint we are using has a curing time of 4 min & the amount to be 
dispensed is very less (appx 0.02ml).

we are unable to locate a company which can provide reliable & compact paint 
dispenser. Also, is it possible to have an electric screw driver which can mark 
the screw with paint after achieving required torque?

Pls tell me, if u know any?

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