Q: Do I need to pre-drill before using this?
Yes, it's designed to be used after pre-drilling a pilot hole for the screw, and it then cuts a clean, centered countersink around that hole.
06J5003 - 3/8" Countersink
Diameter:
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These are exceptionally smooth high-carbon steel countersinks.
Used after pre-drilling for a screw, they cut cleanly and are chatter-free. The cone tip assures accurate centering and the cutter design ejects chips rapidly. They can also be used for counterboring as necessary.
Available in two sizes: 3/8" dia. (1/4" shank) and 1/2" dia. (5/16" shank). 82° countersink.
Yes, it's designed to be used after pre-drilling a pilot hole for the screw, and it then cuts a clean, centered countersink around that hole.
Yes, the same cutter can enlarge a hole enough to counterbore for a plug or washer when a flush countersink isn't deep enough.
These HCS 82 degree single-flute countersinks come as a 3/8" countersink with a 1/4" shank, a 1/2" countersink with a 5/16" shank, or as a set of both sizes.
The single-flute cutter design ejects chips rapidly as it cuts, keeping the cone tip centered in the pre-drilled hole for a smooth, chatter-free countersink instead of a clogged, bumpy one.
| Materials | High-carbon steel |
| Dimensions | 3/8" countersink (1/4" shank) or 1/2" countersink (5/16" shank) |
| Compatibility | Fits drills or drill presses accepting a 1/4" or 5/16" shank |
| Includes | Countersink |
| Package Quantity | 1 item or 1 set |
| Warranty | Lee Valley Satisfaction Guarantee |
Options:
Diameter
Variations:
HCS 82° Single-Flute Countersinks
These are exceptionally smooth high-carbon steel countersinks.
Used after pre-drilling for a screw, they cut cleanly and are chatter-free. The cone tip assures accurate centering and the cutter design ejects chips rapidly. They can also be used for counterboring as necessary.
Available in two sizes: 3/8" dia. (1/4" shank) and 1/2" dia. (5/16" shank). 82° 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.
