System of Measurement System of Measurement |
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Number of Countersinking Ends Number ofCountersinking Ends |
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Material Material |
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Shank Material Shank Material |
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Shank Type Shank Type |
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 | Round |
Finish Finish |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Individual/Set Individual/Set |
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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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Bell-Style Drill-Point Countersinks for Lathe Centers
For applications where the workpiece will go through several machining processes, these countersinks bevel the outer edges of the hole and provide an additional 120° chamfer to prevent damage to the center hole. The 60° countersink angle is compatible with the profile of centers on a lathe. Countersinks 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. Turn the countersink around when one end dulls 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 | |||||||
| 11 | 3/64" | 1/8" | 1/8" | 1 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 12 | 1/16" | 3/16" | 3/16" | 1 7/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 13 | 3/32" | 1/4" | 1/4" | 2" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 14 | 7/64" | 5/16" | 5/16" | 2 1/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 15 | 5/32" | 7/16" | 7/16" | 2 3/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 16 | 3/16" | 1/2" | 1/2" | 3" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 17 | 7/32" | 5/8" | 5/8" | 3 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 18 | 1/4" | 3/4" | 3/4" | 3 1/2" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 19 | 5/16" | 7/8" | 7/8" | 3 5/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 00000 |
| 20 | 3/8" | 1" | 1" | 3 3/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |