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Materials & Applications
Compatibility
Materials & Applications
Recommended use cases for this product across common industrial materials and jobsite applications.
Mild steel, Aluminum, Brass, Copper, Plastics, Non-ferrous metals
Deburring drilled holes
Breaking sharp edges
Countersinking flat-head screws
Finishing operations
Fabrication and maintenance work
Product details
Technical Description
Essential product information, specifications, and recommended use before ordering.
Champion CSK26A 82° HSS Pilotless Zero-Flute Countersink | .307" to 25/32" Screw Range | 1/4" Shank — Weldon-Style Pilotless Deburring Countersink
The CSK26A is a Champion 82° HSS pilotless zero-flute countersink sized for flat-head screws in the .307" to 25/32" range. Its single cutting edge is designed for fast stock removal, easy sharpening and a smooth, chatter-resistant finish when deburring drilled holes, breaking sharp edges or preparing seats for flat-head fasteners.
This exact CSK configuration has a 13/16" body diameter, 1/4" shank and 2-1/16" overall length. The Weldon-style zero-flute geometry supports controlled cutting on thin or soft materials where multi-flute countersinks can vibrate or chatter.
Technical Specifications
| Manufacturer part number | CSK26A |
|---|---|
| Exact screw range | .307" to 25/32" flat-head screws |
| Included angle | 82° |
| Tool style | Pilotless Weldon-style zero-flute countersink |
| Body diameter | 13/16" |
| Shank diameter | 1/4" |
| Overall tool length | 2-1/16" |
| Material | High-speed steel (HSS) |
| Source variant configuration | For screws .307 to 25/32" | Shank 1/4" |
Applications
Use this Champion CSK26A for chatter-free countersinking, deburring drilled holes, edge breaking and clean flat-head screw seating in steel, aluminum, brass, copper, plastics, wood and other suitable non-ferrous materials. It is suited to portable power drills and drill presses, including glass and door-frame installation work.
Consistent Countersinking
Match the cutter to the exact .307" to 25/32" screw range, secure the workpiece and establish the desired depth before cutting. Moderate RPM, light pressure and proper alignment help produce a clean 82° chamfer and extend tool life.
Cutting tools may shatter if misused. Wear appropriate PPE and follow the machine and tool manufacturer's instructions.
Most Interesting Product Feature
Product highlight
Most Interesting Product Feature
- Chatter-Free Zero Flute Geometry — The continuous cutting edge virtually eliminates vibration, producing a smoother finish than traditional multi-flute countersinks, especially on thin or soft materials.
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