Spec

• Finished surface roughness (RzJIS): 6.3 to 25
• Coating: (Ti, Al) N
• Accuracy standard: IT9 to 10
• Helix Angle (°): 25 to 30
• Tip Angle (°): 140
• Material: AH 725
• Drill Diameter (φDc); mm ) : 5.5
• Machining Hole Depth (L/D); mm): 3
• Lubrication type: external
• Shank diameter (φDs); mm): 6
• Valid Groove Length (le; mm ) : 20
• Groove Length (l; mm ) : 28
• Total length (L; mm ) : 66
• Tolerance (m7; mm ) : 0.004 to 0.016
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