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Thread Calculator
Tools
Drill Point Depth Calculator
Calculate the conical tip length of a drill and full breakthrough depth.
Inputs
Drill Diameter
Included Point Angle
118° (Standard Jobber)
135° (High Performance / Split Point)
140° (Carbide / Hard Material)
90° (Spot Drill)
Custom Angle...
Custom Included Angle (°)
Target Full-Diameter Depth
Extra Breakthrough Clearance (Opt)
Calculate
Reset
Formulas used:
Point Length (P)
= (Diameter / 2) / Math.tan(Angle / 2)
Z-Axis Plunge
= Target Depth + Point Length + Clearance
Results
Total Z-Axis Plunge Depth
0.0000"
Conical Drill Point Length (Tip to Shoulder)
0.0000"