Dormer A777 Heavy-Duty Cobalt Jobber Drills - Imperial, Dormer Metalworking Drills, Cutting & Drilling on Island Workshop Supplies

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Dormer A777 Heavy-Duty Cobalt Jobber Drills - Imperial

Application:
heavy-duty Cobalt jobber drill for use when greater heat is generated during drilling, e.g on higher tensile tougher materials and in particular the Aerospace Industry.

Specifications
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 Areospace Specification type P3 Point)

Surface Treatment: Bronze. Material: HSCo Cobalt steel. DIN 338 RN / BS328 / ISO235

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