About Countersinks
Countersinks cut a cone-shaped opening to install screws and rivets flush with a surface or hold workpieces between centers on a lathe. They can also be used for chamfering and deburring.
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Radius-Style Drill-Point Countersinks for Lathe Centers
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These countersinks create a surface that minimizes contact between the material and the lathe centers to prevent damage and allow for more precise machining. The 60° countersink angle is compatible with the profile of centers on a lathe. They have a small drill point on the tip for drilling and countersinking holes with the same tool. The drill point creates a small gap that prevents damage to the points of live or dead centers. When one end dulls, turn the countersink around for a sharp cutting edge.
For technical drawings and 3-D models, click on a part number.
Dia. | 60° Countersink Angle | ||||||
---|---|---|---|---|---|---|---|
Countersink Trade Size | For Drill Bit Size | Body | Shank | Overall Lg. | For Use On | Each | |
Uncoated High-Speed Steel | |||||||
00000 | 0.010" | 1/8" | 1/8" | 1 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |
0000 | 0.015" | 1/8" | 1/8" | 1 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
000 | 0.020" | 1/8" | 1/8" | 1 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
00 | 0.025" | 1/8" | 1/8" | 1 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
0 | 1/32" | 1/8" | 1/8" | 1 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
1 | 3/64" | 1/8" | 1/8" | 1 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 0000 |
2 | 5/64" | 3/16" | 3/16" | 1 7/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 0000 |
3 | 7/64" | 1/4" | 1/4" | 2" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 0000 |
4 | 1/8" | 5/16" | 5/16" | 2 1/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 0000 |
4 1/2 | 9/64" | 3/8" | 3/8" | 2 1/2" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
5 | 3/16" | 7/16" | 7/16" | 2 3/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
6 | 7/32" | 1/2" | 1/2" | 3" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
7 | 1/4" | 5/8" | 5/8" | 3 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
8 | 5/16" | 3/4" | 3/4" | 3 1/2" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
10 | 3/8" | 1" | 1" | 3 3/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |