• Combined Drill and Countersink 60°
D908 7 Leaders

Combined Drill and Countersink 60°

  • 60° Combined drill and countersink centre drill.
  • Improved strength design for cutting different steels below 48HRC, cast iron, aluminium and copper.
  • Application for centre hole preparations for lathe and Cylindrical grinding.
Steel < 48HRC
P H M K N S
VHM
Uncoated Bright
Flute_drill-2Z
Central Point Angle_ 60˚
Point Angle_120˚
DIN333
Steel/cast iron/AL./copper
Work Material
P H M K N S
GR1 GR2 GR3 GR4 GR5 GR6 GR7 GR8 GR9 GR10 GR11 GR12 GR13 GR14 GR15 GR16 GR17
Carbon Steel <24HRC
Low-alloyed Steel
<30HRC
Hi-Alloyed Steel
30~38HRC
Hardened Steel
38~48HRC
Hardened Steel
48~56HRC
Hardened Steel
56~68HRC
Hardened Steel
Stainless Steel Cast Iron Aluminium Copper Plastics FRP CFRP Composite Material Graphite Titanium Nickel High Temp Alloys
Product Specification
  • Dc. 0.5~5.0mm
Dc Lc L d
h7 mm mm h5
0.5 0.8 38 3
0.8 1.1 38 3
1 1.3 38 3
1.25 1.6 38 3
1.6 2 38 4
2 2.5 50 5
2.5 3.1 50 6
3.15 3.9 63 8
4 5 66 10
5 6.3 73 12