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
- Mild steel
- Steel
- Wood
- Plastics
Recommended applications
Typical jobs and operations
- Aluminum, Brass, Copper, Plastics, Wood, Mild steel (light-duty use) Flat-head screw installation Fabrication and assembly Maintenance and repair Installation work Production drilling where speed matters
- 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 subtypeCenter Drills & Countersinks
Detailed styleHSS · 60°
Manufacturer series798
Series family798
Measurement systemWire/Letter/Number
Tool materialHigh-speed steel
Manufacturer part number798-1
Dimensions & fit
Size1/8"
Increment1/3 in
Cutting diameter1/8"
Overall length1-1/4
Shank diameter3/64
Pack quantity1
Cutting geometry
Countersink angle60.0°
04 -- Why Choose this series
Series advantage
Why choose the 798 series
798
Production-Grade One-Pass Accuracy — The 798 series is built for higher-duty work, maintaining concentric alignment and consistent countersink geometry across repeated operations, which is critical in production and fabrication environments.
Features supporting this advantage
- Production-Grade One-Pass Accuracy — The 798 series is built for higher-duty work, maintaining concentric alignment and consistent countersink geometry across repeated operations, which is critical in production and fabrication environments.
- 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 798-1 #1 60° HSS Center Drill & Countersink | 1/8" Body x 3/64" Drill — Plain-Style Combined Drill for Machine Centers
The Champion 798-1 (#1) is an exact 1/8" body x 3/64" drill HSS center drill and countersink. Its integrated drill and 60° countersink produce a concentric center hole in one setup, helping prepare the ends of work held between centers on a lathe or machine center.
This plain-style combination tool combines drilling and countersinking without changing tools. The high-speed steel construction is suited to repeatable center-hole work in production, fabrication, maintenance and general machining applications where accurate alignment and a clean conical seat are required.
Technical Specifications
| Manufacturer part number | 798-1 |
|---|---|
| Standard size | #1 |
| Body diameter | 1/8" |
| Drill diameter | 3/64" |
| Overall tool length | 1-1/4" |
| Included angle | 60° |
| Tool style | Plain-style combined drill and countersink |
| Material | High-speed steel (HSS) |
| Source variant configuration | 1/8" Body Ø | 3/64" Drill Ø & Length |
Applications
Use this Champion 798-1 center drill for producing center holes in the ends of shafts and other work held on machine centers. It is also suitable for lathe work, drill presses, Bridgeport-style machines, production drilling, fabrication, assembly and maintenance involving flat-head or center-hole geometry.
Why Use a Combined Center Drill?
The integrated HSS drill and countersink keeps the pilot hole and 60° conical seat aligned in a single operation. This helps reduce tool changes, improve repeatability and create a clean starting point for turning between centers or seating a compatible center.
Secure the workpiece, use the correct speed and feed for the material, apply suitable cutting fluid when required and wear appropriate eye protection. Cutting tools may shatter if misused; follow the machine and tool manufacturer's instructions.
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A clear process from order to delivery
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1
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Details confirmed
3
Picking and packing
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4
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5
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