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 :
0.30mm - 0.95 mm 118?? Conical point
1.00mm to 1.40mm inclusive 135?? 4 facet point
1.50mm 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