Combination Drills - Counter Sinks

Combination Drills

This convenient tool combines the drilling and countersinking of a hole in one operation. The advantage is assurance of alignment of both sections of the process.

Combintation Drill/Countersinks HSS Plain Type 60° Included Bright

The plain type combination drill & countersink produces a seat or bearing surface for subsequent machining operations.  It's the most commonly used and produces a 60 degree angle satisfactory for turning or grinding.

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Combintation Drill/Countersinks HSS Bell Type 60° Included Bright

 These “radius” combination drills and countersinks are designed to reduce the bearing surface of the center hole and provide a protected centering seat while reducing the risk of breakage.

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