MEGA-Step-Drill-Steel-Plus

Diameter d1 (mm)

6.8

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31140993

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Product description

The double-edged step drill MEGA-Step-Drill-Steel-Plus was specifically developed to produce thread core holes according to DIN 8378. With optimized centering and two guide chamfers, the step drill achieves a significant increase in wear resistance and performance.

Material suitability

P
P1
highly suitable
P2
highly suitable
P3
highly suitable
P4
highly suitable
P5
highly suitable
P6
highly suitable
M
M1
M2
M3
K
K1
highly suitable
K2
highly suitable
K3
highly suitable
N
N1
N2
N3
N4
S
S1
S2
S3
S4
S5
H
H1
highly suitable
H2
H3

Technical specifications

Sink angle
90   °
Product class
Performance-Line  
d1
6.8   mm
d2
10   mm
d3
10   mm
l1
89   mm
l2
47   mm

l3

21   mm
l4
40   mm
Cooling
internal cooling  
Number of cutting edges (z)
2  
Bore tolerance
≥ IT 9  
Shank tolerance
h6  
tip angle
140   °
Shank type
HA  
Material group
MH