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Materials & Applications
Compatibility
Materials & Applications
Recommended use cases for this product across common industrial materials and jobsite applications.
Mild and medium steel, Stainless Steel, Aluminum, Brass, Copper, Non-ferrous metals
CNC and drill press countersinking
Precision chamfering
Flat-head fastener seating
Production machining
Industrial manufacturing and assembly
Product details
Technical Description
Essential product information, specifications, and recommended use before ordering.
Champion 800-7/8X82 7/8" 82° 4-Flute HSS Machine Countersink — Extended-Shank Countersink for Machine Shops
The 800-7/8X82 is an exact 7/8" 82° HSS machine countersink from Champion's 800 four-flute series. Its four cutting edges are designed for balanced, repeatable countersinking, chamfering and deburring of existing holes in production and machining environments.
This configuration combines a 7/8" cutting diameter, 82° included angle, 4-1/4 overall tool length and a 1/2" shank. The extended shank is intended for compatible screw machines, turret lathes and other rigid machine setups where reach, concentricity and a clean finish are important.
Technical Specifications
| Manufacturer part number | 800-7/8X82 |
|---|---|
| Exact cutting diameter | 7/8" |
| Included angle | 82° |
| Number of flutes | Four |
| Material | High-speed steel (HSS) |
| Overall tool length | 4-1/4 |
| Shank diameter | 1/2" |
| Source variant configuration | 7/8" x 82° |
Applications
Use this Champion 800-7/8X82 countersink for machine countersinking, chamfering and deburring existing holes in steel, stainless steel, aluminum, brass, copper and other non-ferrous metals. It is suited to screw machines, turret lathes, drill presses, CNC equipment and other rigid setups using the correct speeds, feeds and cutting fluid.
Four-Flute Machine Countersinking
The four-flute geometry distributes cutting forces around the cone to support smooth cutting, consistent surface finish and reliable flat-head fastener seating. The exact 7/8" by 82° configuration helps match the tool to the required hole and countersink geometry without a visible variant selector.
Secure the workpiece, use the correct machine and arbor, and select speeds, feeds and lubricant for the material and tool diameter. 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
- Balanced Four-Flute Cutting Geometry — The four evenly spaced cutting edges provide superior stability, concentricity, and surface finish in rigid machine setups, making the 800 series ideal for high-precision and repeatable countersinking.
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