* Plain style 60° angle used for producing center holes in workpieces which require precision drilling or machining between centers.
* It also used as starter holes to prevent a drill bit from "walking".
* Center and spotting drills are traditionally used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking.
* Used for producing center holds in components or work pieces with require machining between centers.
Used for producing center holds in components or work pieces with require machining between centers.
Combined Drill and Countersinks (ISO 866, DIN333A, Plain type)
|
Art No.
|
Size (d)
|
D (Body Diameter)
|
L (Allover Length)
|
|
40801001
|
1.0
|
3.15
|
31.5
|
|
40801002
|
1.25
|
3.15
|
31.5
|
|
40801003
|
1.6
|
4.0
|
35.5
|
|
40801004
|
2.0
|
5.0
|
40.0
|
|
40801005
|
2.5
|
6.3
|
45.0
|
|
40801006
|
3.15
|
8.0
|
50.0
|
|
40801007
|
4.0
|
10.0
|
56.0
|
|
40801008
|
5.0
|
12.5
|
63.0
|
|
40801009
|
6.0
|
16.0
|
71.0
|
|
40801010
|
8.0
|
20.0
|
80.0
|
ANSI B94.11M, Type A
|
Art No.
|
No.
|
Size (d)
|
D (Body Diameter)
|
Allover Length
|
|
40802003
|
1#
|
3/64"
|
1/8"
|
1-1/4"
|
|
40802004
|
2#
|
5/64"
|
3/16"
|
1-7/8"
|
|
40802005
|
3#
|
7/64"
|
1/4"
|
2"
|
|
40802006
|
4#
|
1/8"
|
5/16"
|
2-1/8"
|
|
40802007
|
5#
|
3/16"
|
7/16"
|
2-3/4"
|
|
40802008
|
6#
|
7/32"
|
1/2"
|
3"
|
|
40802009
|
7#
|
1/4"
|
5/8"
|
3-1/4"
|
|
40802010
|
8#
|
5/16"
|
3/4"
|
3-1/2"
|
