Dormer A777 HSCo Heavy-Duty Jobber Drill 8.50mm OL: 117mm WL: 75mm A7778.5
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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.
Flute Geometry: Standard Helix, Right hand spiral, Thick Web
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 / ISO 235
Tip diameter: 5.80mm
Working length: 75mm.
Overall length: 117mm.
|Manufacturers Part Number||A7778.5|
|Package Height (cm)||0.9|
|Package Width (cm)||0.9|
|Package Length (cm)||11.7|
|Bullet 1||Standard Helix.|
|Bullet 2||Right hand spiral.|
|Bullet 3||Thick Web.|
|Bullet 4||Material: HSCo Cobalt steel|