Pass through characteristics on PFMEA

#1
Hello,

I need to understand how to identify the pass through characteristics that need to be linked or controled in to our PFMEA. Are this characteristics coming from customer specifications or do we need to identify them according to the customer needs?

According to my experience, this pass through characteristics are product characteristics generated at the supplier facilities and you as tier 1 dont have any control of them. So this is why I dont consider them in my process PFMEA, the most that I can to is to prevent that those characteristics gets damaged in our process.

Thank you!
 
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#2
Just a correction on what a 'pass through characteristic' is.
A PTC (pass through characteristic) is a part feature which is NOT used by your customer, but will be used further down the supply chain. As an example, you manufacture a transmission component. Your customer (the Tier 1) assembles your components into a finished transmission.
On your component there is a hole which is used to allow an assembly bolt to pass through when attaching the finished transmission to the vehicle. This is a PTC for your Tier 1 customer.
 
#4
Hello,

Well, yes. In this case I am Tier 1 and I dont use this characteristic, but the customer will. It depends on the level of supply chain you analyze it.
 
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