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OSTAR Tools --> Products --> Cutting for metal --> HSS drill bits --> center drills, Combined Drill and Countersinks
 
Combined Drill and Countersinks (ISO2540, DIN333B, Bell Type)
                    
Art No.
Size (d)
D (Body Diameter)
Bell Size
L (Allover Length)
40803001
1.0
4.0
2.12
31.5
40803002
1.25
5.0
2.66
31.5
40803003
1.6
6.3
3.35
35.5
40803004
2.0
8.0
4.25
40.0
40803005
2.5
10.0
5.3
45.0
40803006
3.15
11.2
6.7
50.0
40803007
4.0
14.0
8.5
56.0
40803008
5.0
18.0
10.6
63.0
40803009
6.3
20.0
13.2
71.0
40803010
8.0
25.0
17.0
80.0
 
ANSI B94.11M, Bell Type B
Art No.
No.
Size (d)
Body Diameter
Bell dia.
Allover Length
40804001
11#
3/64"
1/8"
0.10
1-1/4"
40804002
12#
1/16"
3/16"
0.15
1-7/8"
40804003
13#
3/32"
1/4"
0.20
2"
40804004
14#
7/64"
5/16"
0.25
2-1/8"
40804005
15#
5/32"
7/16"
0.35
2-3/4"
40804006
16#
3/16"
1/2"
0.40
3"
40804007
17#
7/32"
5/8"
0.50
3-1/4"
40804008
18#
1/4"
3/4"
0.60
3-1/2"
 
 
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