Version:
High concentricity.
Large section parabolic flutes; strong due to strengthened core thickness (without core taper).
≤ 16 mm ⌀:
Bright finish flutes, nitrided lands; > 16 mm ⌀:
Specially treated surface.
Special sturdy drills for extremely deep holes.
Up to approx.
15×⌀ without drill withdrawal.
With point geometry shape A.
Recommendation:
Maximum drilling depth:
L2 = LC - 1.
5 × DC.
Note:
For suitable reducing adapters for tools with MT shanks see No.
343000-343530.
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