Q: What sizes does this countersink drill come in?
This countersink set is available in two sizes: one sized for #8 screws with a 1/8" drill bit and 3/8" diameter countersink, and one for #10 screws with a 9/64" bit and 1/2" countersink.
66J4035 - #8 Carbide Countersink Drill Unit with Low-Friction Depth Stop
Screw Size:
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These countersinks are well made to withstand heavy use. Each has a high-speed steel drill bit with slow spiral fluting for quick, clean cuts and a carbide-tipped countersink for exceptional wear resistance.
The depth stop has a free-spinning, low-friction collar to prevent surface marring and large side openings for chip clearance. You can adjust the depth of the pilot hole and the countersink/counterbore independently.
The 1/4" hex shank is grooved for use with quick-change chucks. Two sizes are available, designed for use with #8 and #10 screws. The #8 unit has a 1/8" drill bit and 3/8" diameter countersink, while the #10 has a 9/64" bit and 1/2" countersink.
This countersink set is available in two sizes: one sized for #8 screws with a 1/8" drill bit and 3/8" diameter countersink, and one for #10 screws with a 9/64" bit and 1/2" countersink.
Yes, the pilot-hole depth and the countersink or counterbore depth adjust independently, so you can dial in each one for the screw you're using.
The depth stop uses a free-spinning, low-friction collar that rides against the surface without scoring or burnishing it, and large side openings clear chips as you drill.
Yes, the 1/4" hex shank is grooved for quick-change chucks, so you can swap it in and out without a keyed chuck.
| Materials | High-speed steel drill bit; carbide-tipped countersink |
| Dimensions | 1/4" hex shank overall; 1/8" drill bit with 3/8" dia. countersink (#8 size); 9/64" drill bit with 1/2" dia. countersink (#10 size) |
| Compatibility | Fits #8 and #10 screws |
| Compatibility Dimensions | Installs in quick-change chucks via grooved 1/4" hex shank |
| Includes | Countersink drill bit |
| Package Quantity | 1 item |
| Warranty | Lee Valley Satisfaction Guarantee |
Options:
Screw Size
Variations:
Carbide Countersink Drills with Low-Friction Depth Stop
These countersinks are well made to withstand heavy use. Each has a high-speed steel drill bit with slow spiral fluting for quick, clean cuts and a carbide-tipped countersink for exceptional wear resistance.
The depth stop has a free-spinning, low-friction collar to prevent surface marring and large side openings for chip clearance. You can adjust the depth of the pilot hole and the countersink/counterbore independently.
The 1/4" hex shank is grooved for use with quick-change chucks. Two sizes are available, designed for use with #8 and #10 screws. The #8 unit has a 1/8" drill bit and 3/8" diameter countersink, while the #10 has a 9/64" bit and 1/2" countersink.
Choose an option to view item availability.
Choose an option to view item availability.
Choose an option to view item availability.
Choose an option to view item availability.
