Hanwin Glass Technology
HANWINGLASS TECHNOLOGY
Efficiency Series

Countersink & Combi Tools

Combination drill-countersink tools that create a hole and its countersunk recess in a single operation. Drill and chamfer in one pass — no tool changes, no realignment, just flush-fit hardware every time.

Ø4–Ø30mm
Drill Diameter
90° / 120°
Countersink Angle
400–700
Holes per Bit
±0.05mm
Tolerance
Process

How It Works

A single tool performing two operations — here's the engineering behind the one-pass drill and chamfer.

Cross-Section Diagram
Shank
Drill Tip
Drill Body
Countersink Section
Recess Profile
90° / 120°
Glass Surface
Advantages

Why Combi Tools

Two operations, one tool. Every feature engineered for speed and precision.

Single-Pass Efficiency

Drill the through-hole and create the countersunk recess in one operation, eliminating tool changes and reducing cycle time by up to 50%.

Precise Angle Matching

Countersink geometry precisely matches standard 90° and 120° hardware angles, ensuring perfect flush fit for flat-head screws and bolts.

Dedicated Countersink Option

Standalone countersink tools available for chamfering existing holes, deburring edges, or creating lead-in chamfers without drilling.

Premium Carbide Construction

Both drill and countersink portions use premium carbide, available in Standard, Premium, and Ultra-Premium quality grades.

50% Faster Cycle Time

By combining drilling and countersinking into a single pass, you eliminate tool change downtime and reduce overall cycle time by up to half.

Specifications

Technical Specs

Precision-engineered dimensions matched to standard hardware requirements.

Drill Diameter
Ø4–Ø30mm (drill) + countersink
Overall Length
45–90mm
Glass Thickness
4–19mm
Speed Range
800–2,000 RPM
Life Expectancy
400–700 holes
Price Range
$$$
Hardness
HRA 91–93
Tolerance
±0.05mm
Efficiency

Two Operations, One Tool

Side-by-side comparison of combi vs. separate drill and countersink operations.

With Combi Tool

Single-Pass Operation
1Mount glass panel10s
2Drill + countersink (one pass)15s
3Install hardware10s
Total Time35s

Separate Operations

Multi-Step Process
1Mount glass panel10s
2Install drill bit5s
3Drill through-hole12s
4Remove drill bit3s
5Install countersink bit5s
6Align to existing hole5s
7Countersink recess12s
8Install hardware10s
Total Time62s
44% Time Saved

Per hole — the combi tool eliminates 5 steps and saves 27 seconds per operation.

Applications

Where It Matters

Every flush-mount hardware installation benefits from the combi approach.

Shower Enclosures

Hinge Mounting

Shower enclosure hinges require flush-mount screws that sit perfectly within the glass surface. Protruding hardware creates water traps, aesthetic flaws, and potential safety hazards. Combi tools drill the hinge mounting hole and create the countersunk recess in one pass, ensuring each hinge sits flush and functions reliably.

Hole Size
Ø8–Ø14mm
Glass
6–12mm Tempered
Angle
90° Standard
Volume
200–500 panels/day
Chip-free holes maintain tempered glass integrity
Consistent countersink depth across production runs
90° angle matches standard shower hinge screws
Reduced cycle time for high-volume enclosure lines
Quality

Choose Your Grade

Standard for reliable daily use. Premium for tighter tolerances and longer tool life.

Standard

Reliable daily performance
Hardness
HRA 89–91
Life Multiplier
1.0×
Carbide Grade
Industrial WC-Co
Price Multiplier
1.0×
Industrial-grade tungsten carbide tip
Steel or bronze body construction
Consistent daily performance
Standard warranty coverage
Wide machine compatibility
Ideal For
General architectural glass drillingProduction lines with standard quality requirementsCost-sensitive high-volume operationsSituations where tool changes are acceptable

Premium

Extended life, tighter tolerance
Hardness
HRA 91–93
Life Multiplier
1.3–1.5×
Carbide Grade
Fine-grain WC-Co
Price Multiplier
1.4×
Fine-grain tungsten carbide tip
Precision-ground geometry
30–50% longer life than Standard
Tighter hole diameter tolerance
Smoother hole wall finish
Ideal For
High-volume production requiring minimal downtimeArchitectural glass with visible holesProcessing coated and Low-E glassOperations where cost-per-hole matters more than tool price
Maintenance

Keep Them Sharp

Five essential practices to maximize tool life and maintain flush-fit quality.

01

Match angle to hardware

Verify the countersink angle matches your hardware specification (90° or 120°). Using the wrong angle creates poor flush fit and potential stress concentrations.

More
02

Monitor countersink depth

Check recess depth periodically. If depth decreases, the countersink cutting edges are wearing. Resharpen or replace to maintain flush-fit quality.

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03

Use consistent feed pressure

Combination tools require steady, consistent feed pressure. Too much pressure causes oversized recesses; too little leaves insufficient depth for flush fit.

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04

Clean between operations

Glass particles can accumulate in the transition zone between drill and countersink portions. Clean with compressed air every 50–100 holes.

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05

Track drill and countersink wear separately

The drill and countersink portions may wear at different rates. Inspect both independently — a drill may still be sharp while the countersink needs replacement.

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FAQ

Common Questions

Everything you need to know about countersink and combi tools.

Use combination tools when you need flush-mount hardware and want to minimize cycle time — they drill and countersink in one pass. Use separate tools when you need flexibility to vary the countersink angle, depth, or when countersinking existing holes without drilling.

Standard angles are 90° (for most flat-head screws and bolts) and 120° (for some specialized fasteners). Custom angles are available on request. The angle must match your hardware specification for proper flush fit.

Yes. Dedicated countersink tools (without the drill portion) are designed specifically for chamfering existing holes. They're available in the same diameter range and quality grades as our drill bits.

The recess depth should match the head height of your hardware — typically 2–4mm for standard flat-head screws. The goal is a perfectly flush surface where the hardware head sits level with or slightly below the glass surface.

Enquiry

Get a Quote

Tell us about your application and we'll recommend the right combi tool configuration.

Contact Information

Phone
+86 XXX XXXX XXXX
Email
sales@hanwin.com
Location
Guangdong, China

Pre-configured for Countersink

Your enquiry is pre-tagged for our countersink product line. Include your glass thickness, hole diameter, and hardware angle requirements for a faster response.

Efficiency Starts Here

Ready to Streamline Your Production?

Combining drill and countersink operations into a single pass is the engineering efficiency your production line deserves. Let us configure the right combi tools for your glass processing needs.

ISO 9001 Certified
48hr Response
Quality Guarantee
15+ Years Experience