Dormer A777 Hsco Heavy-duty Jobber Drill 3.30mm Ol:65mm Wl:36mm DOR330COB from Island Workshop Supplies

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Dormer A777 HSCo Heavy-Duty Jobber Drill 3.30mm OL:65mm WL:36mm

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Product Code: DOR330COB

A777 Metric Cobalt Jobber Drill Bits have a heavy-duty, 135° split point for use when greater heat is generated during drilling, e.g on higher tensile tougher materials and in particular the Aerospace Industry.

Specification

Flute Geometry: Standard Helix, Right hand spiral, Thick Web
Point Angle:
0.30 mm - 0.95 mm 118° Conical point
1.00 mm to 1.40 mm inclusive 135° 4 facet point
1.50 mm and above 135° split point sizes (Split point geometry to NAS 907 Aerospace Specification type P3 Point)

Surface Treatment: Bronze
Material: HSCo Cobalt steel

DIN 338 RN / BS328 / ISO 235

Tip diameter: 3.30mm
Working length: 36mm.
Overall length: 65mm.

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