ST1221V or WST127535 Countersink Cutters - Process - Boeing BAC5004-1


Eloy Gomez

Not sure if this is the right place for this post.

We are a Boeing supplier and one specification BAC5004-1 states that we should prepare our C'bore and C'sink using ST1221V or WST127535 countersink cutters.

Is any one familiar with ST1221V or WST127535 cutters? We need a source of supply or specification, we have looked everywhere and we are unable to come up with anything.

At the moment we are using FZP-8 cutters but we dont think this will give us what our requirement calls out. Our Beoing rep is also not sure where to find a source of supply.

Thanks in advance.
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