01 — Essential Specifications
Choose with confidence
Essential specifications
The facts that matter most when choosing the right product in this family.
02 -- Materials, Applications & Machines
Working compatibility
Materials, applications & machines
Quickly confirm what the tool can cut, the work it is designed to perform, and the equipment it is intended to run on.
Compatible materials
Recommended workpiece materials
- Aluminum
- Non-ferrous metals
- Mild steel
- Steel
- Plastics
Recommended applications
Typical jobs and operations
- 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
- Holemaking
03 -- Complete Technical Specifications
Technical data
Complete technical specifications
Open only the groups you need to confirm construction, dimensions, and operating requirements.
Construction & identification
Tool typeCountersinks
Tool subtypeZero-Flute Countersinks
Detailed styleHSS · 82°
Manufacturer seriesCSK
Series familyCSK
Measurement systemImperial
Tool materialHigh-speed steel
Manufacturer part numberCSK26
Dimensions & fit
Size25/32"
Cutting diameter13/16
Overall length2-5/8
Shank diameter1/2
Pack quantity1
Cutting geometry
Countersink angle82.0°
04 -- Why Choose this series
Series advantage
Why choose the CSK series
CSK
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.
Features supporting this advantage
- 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.
- High-speed steel
05 -- Compatibility & What's Included
06 -- Use Notes & Technical Description
Before you use it
Use notes & technical description
Important fit, operating, and care guidance to review before putting the tool to work.
View the complete technical description
Champion CSK26 82° HSS Pilotless Zero-Flute Countersink | .307" to 25/32" Screw Range | 1/2" Shank — Weldon-Style Pilotless Deburring Countersink
The CSK26 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, 1/2" shank and 2-5/8" 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 | CSK26 |
|---|---|
| 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 | 1/2" |
| Overall tool length | 2-5/8" |
| Material | High-speed steel (HSS) |
| Source variant configuration | For screws .307 to 25/32" | Shank 1/2" |
Applications
Use this Champion CSK26 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.
How ordering works
A clear process from order to delivery
Whether you need one replacement tool or a recurring supply order, every step is designed for clear communication, accurate fulfillment and dependable delivery.
1
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Secure submission
2
Confirmation sent
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Details confirmed
3
Picking and packing
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Carefully prepared
4
Tracking provided
As soon as the carrier label is created, the tracking information is sent to you.
Trackable shipment
5
Delivery to your location
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Dependable delivery
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