ATORN centre drill with radius, HSS form R, 1.25 mm x 3.15 mm x 31.5 mm

Part Number: 11010012
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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 1,25 mm
• Body diameter D 3,15 mm
• Overall length L 31,5 mm
• Pilot length l 3,3-3,6 mm
• Radius 3,15 mm 
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