ATORN centre drill with radius, HSS form R, 2.5 mm x 6.3 mm x 45 mm

Part Number: 11010025
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Centre drill HSS
• with radius
• Execution: shape R, countersink angle 60 degree, with radius, relief ground, with spiral flutes
• Advantages: The radius compensates positional imprecisions of the lathe centres. Reduced risk of breakage of the centre drill bit (no sharp transition).
• Dimensions: diameter 0.5 and 0.8 mm, only available for single-sided cutting.
• Drill diameter d 2,5 mm
• Body diameter D 6,3 mm
• Overall length L 45 mm
• Pilot length l 6,3-6,8 mm
• Radius 6,3 mm