Case Study

Countersinks

Countersinks

Inspection Problem Countersink holes must be drilled with precision to the exact depth required, and the walls to the exact angle. The dimensions are especially critical for countersinks on the exterior panels of aircraft because they determine how well the fastener will fit and if the fastener head will be positioned exactly fair or flush to the adjacent surfaces. A fastener that protrudes above or below the surface beyond certain

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