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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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Hex-Shank High-Speed Steel Countersinks for Screws
Pop these countersinks into power drills, screwdrivers, and other tools that accept 1/4" hex shanks. Tools grip their hex shanks more securely than round shanks to tackle jobs that require higher torque. Use them to create a 90° countersink angle that is compatible with metric flat- and oval-head screws so the screws will sit flush with your surface. These countersinks are also good for smoothing out holes, commonly known as deburring. All are high-speed steel for drilling wood and most metal and plastic.
90° Countersink Angle | |||||
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| Body Dia. | Shank Size | Overall Lg. | For Use On | Each | |
Uncoated High-Speed Steel | |||||
3 Flute | |||||
| 3/16" | 1/4" | 1 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
| 5/16" | 1/4" | 1 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 3/8" | 1/4" | 1 3/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 7/16" | 1/4" | 1 3/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 5/8" | 1/4" | 1 5/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 3/4" | 1/4" | 1 5/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
Drill-Bit Countersinks with Drill Bit
These countersinks come attached to a high-speed steel jobbers’ bit for drilling and countersinking at the same time. They have a hex shank that fits in all quick-change and standard drill chucks. The bit is held in place with a set screw and can be adjusted up to 1” for different screw lengths. The 82° countersink angle is compatible with the profile of flat- and oval-head inch screws.
Countersinks | |||||||||||
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For Screw Size | Replacement Drill Bits | ||||||||||
| Hard Wood | Soft Wood | Drill Bit Size | Body Dia. | Shank Size | Overall Lg. | Max. Hole Drilling Dp. | For Use On | Each | Each | ||
Uncoated High-Speed Steel | |||||||||||
2 Flute | |||||||||||
| __ | No. 6 | 3/32" | 1/2" | 1/4" | 2 23/32" | 1" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Wood | 0000000 | 00000 | 0000000 | 00000 |
| No. 10 | No. 12 | 9/64" | 1/2" | 1/4" | 3 1/8" | 1" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Wood | 0000000 | 0000 | 0000000 | 0000 |
| No. 4 | __ | 5/64" | 1/2" | 1/4" | 2 5/8" | 1" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Wood | 0000000 | 0000 | 0000000 | 0000 |
| No. 6 | No. 8 | 7/64" | 1/2" | 1/4" | 2 13/16" | 1" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Wood | 0000000 | 0000 | 0000000 | 0000 |
| No. 8 | No. 10 | 1/8" | 1/2" | 1/4" | 2 29/32" | 1" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Wood | 0000000 | 0000 | 0000000 | 0000 |
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.
Combination Countersinking Drill and Screwdriver Bits | Replacement Drill Bits | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
Hex-Shank High-Speed Steel Countersink Sets for Screws
Choose countersinks of different sizes from these sets. Compared to countersinks with round shanks, these 1/4" hex-shank countersinks can be gripped more tightly by compatible drills and screwdrivers for greater torque. These countersinks cut at 90° angles suitable for metric flat-head and oval-head screws, and are also good for deburring holes or smoothing edges. Made from high-speed steel, use these on most metal and plastic.
90° Countersink Angle | ||||||||
|---|---|---|---|---|---|---|---|---|
| Number of Flutes | Body Dia. Included | Includes | Number of Pieces | Number of Countersinking Ends | For Use On | Container Type | Each | |
Uncoated High-Speed Steel | ||||||||
| 3 | 3/16", 5/16", 3/8", 7/16", 5/8", 3/4" | 1/4" Bit Screwdriver, 1/4" Hex Shank Extension | 8 | 1 | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | Plastic Case | 000000 | 0000000 |
Quick-Change Combination Countersinking
Drill and Screwdriver Bit Sets
Fasten differently sized screws with these sets. They save you the effort of switching three separate bits in and out of a power tool, instead letting you flip between a countersinking drill and a screwdriver bit with a single hand. You can also attach your own countersinking drills and screwdriver bits as long as they have a 1/4” hex shank.
Countersinking drills have an 82° angle, allowing inch-sized flat- and oval-head screws to sit flush with the surface.
| No. of Pieces | Includes | Countersink Angle | Countersink Body Dia. | No. of Countersink Flutes | Adapter Hex Shank Size | For Use On | Each | |
Black-Oxide High-Speed Steel Countersink | ||||||||
|---|---|---|---|---|---|---|---|---|
| 11 | 1 Drill-Bit Countersink for 3/32" Drill Bit 1 Drill-Bit Countersink for 7/64" Drill Bit 1 Drill Bit (3/32" Drill Bit Size) 2 Drill Bits (7/64" Drill Bit Size) 1 Phillips No. 1 Screwdriver Bit (1" O'all Lg.) 2 Phillips No. 2 Screwdriver Bits (1" O'all Lg.) 1 Reversible Shaft 1 Adapter 1 Hex L-Key | 82° | 3/8" | 4 | 5/16" | Aluminum, Fiberglass, Plastic, Wood | 0000000 | 000000 |