Aluminum is the most common material in use for external airplane parts and as such, requires countersinking for riveting connection. The use of these countersink can be made with a separate pilot. The advantage is that worn out pilots can be replaced, and countersink life can be prolonged significantly. In addition, different pilot diameters, under certain diameter range, can be used. The use of Telcon’s PCD countersink is straight forward with a standard stop cage holder.
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