Description
Countersink Step Drills 90deg
Choose which size you require from the options above.
Of course we are all familiar with a center drills for lathe work, which is a combination drill and countersink
These Drill Counter Sinks are specially designed to drill through steel or wood
To suit the most common Screw sizes you can use most sizes also for Imperial Counter Sunk head screws, these are a real time saver in the workshop
These are most commonly used in through-hole applications.
Screw Size |
Pilot Drill size |
Pilot length |
COUNTER SINK SIZE |
DRILL LENGTH |
SHANK SIZE |
3mm |
3.4mm |
15mm |
6.5mm |
69mm |
6.5mm |
4mm |
4.5mm |
20mm |
8mm |
79mm |
8mm |
5mm |
5.5mm |
25mm |
9.5mm |
89mm |
9.5mm |
6mm |
6.6mm |
30mm |
11mm |
95mm |
11mm |
8mm |
9mm |
35mm |
14mm |
99mm |
12mm |
10mm |
11mm |
40mm |
17.5mm |
110mm |
12mm |
12mm |
14mm |
45mm |
20mm |
120mm |
12mm |
Additional Information
Coat: |
Titanium |
Materials: |
HSS + 5% Cobalt |
Measurement Type: |
Metric |