For Use On For Use On |
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Individual/Set Individual/Set |
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Bit-Holding Mechanism Bit-Holding Mechanism |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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For Drive Style For Drive Style |
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For Use With For Use With |
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Number of Countersinking Ends Number ofCountersinking Ends |
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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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Quick-Change Combination Countersinking Drill and Screwdriver Bits
Drill, countersink, and drive screws without switching three separate bits in and out of your power tool. With a single hand, flip between drilling countersunk holes and driving screws. The countersinking drill and screwdriver bit are secured with set screws, so you can switch them out for any bits with a 1/4” hex shank.
The countersinking drill has an 82° angle, allowing inch-sized flat- and oval-head screws to sit flush with the surface.
For technical drawings and 3-D models, click on a part number.
Combination Countersinking Drill and Screwdriver Bits | Replacement Drill Bits | ||||||||||||
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| For Screw Size | Drill Bit Size | Countersink Body Dia. | Max. Hole Drilling Dp. | Countersink Angle | Screwdriver Bit Size | For Drive Style | Adapter Hex Shank Size | Adapter Lg. | For Use On | Each | Each | ||
Black-Oxide High-Speed Steel Countersink | |||||||||||||
4 Countersink Flutes | |||||||||||||
| No. 6 | 3/32" | 3/8" | 1 3/4" | 82° | No. 2 | Phillips | 5/16" | 3 3/4" | Aluminum, Fiberglass, Plastic, Wood | 0000000 | 000000 | 0000000 | 00000 |
| No. 8 | 7/64" | 3/8" | 2" | 82° | No. 2 | Phillips | 5/16" | 3 3/4" | Aluminum, Fiberglass, Plastic, Wood | 0000000 | 00000 | 0000000 | 0000 |
| No. 10 | 1/8" | 3/8" | 2 1/4" | 82° | No. 2 | Phillips | 5/16" | 3 3/4" | Aluminum, Fiberglass, Plastic, Wood | 0000000 | 00000 | 0000000 | 0000 |