LIHAO TECHNOLOGY · Precision CNC Cutting Tools
HSS-E Cobalt Countersink, Chamfer & Deburring Tools
Lihao Technology | Factory Direct | ybeck.com
German Material · Precision Grinding · High-End Coating · Factory Direct
ABOUT US
About Lihao Technology
Factory in Changan, Dongguan - R&D and production of precision CNC cutting tools, 14+ years in HSS-E cobalt countersinks, serving 1000+ sheet metal factories
Lihao Technology manufactures HSS-E cobalt countersink bits, chamfer cutters and deburring tools for metal and stainless steel. Our countersink bits are available in 60°, 82°, 90°, 100°, 110° and 120° angles with single-flute and arc-edge designs, manufactured to the DIN 335 standard from M42 cobalt high-speed steel. Typical applications include hole chamfering, screw countersinking, spot facing and hole deburring on sheet metal, enclosures, automotive parts and electronic chassis. Whether you need 90-degree countersinks for screw holes, 120-degree chamfer tools for edge deburring, or custom geometry for CNC applications, we can match the right tool to your workpiece and production volume. We also provide custom CNC tooling and OEM service with factory-direct pricing and 3x longer tool life.
Innovation · Premium Materials · Optimized Process
01
German-imported material — Premium cobalt HSS bar stock, hard yet tough, chip-resistant edges
02
In-house and imported precision grinding — Self-developed + imported precision machines, angle tolerance ±0.1°, consistent quality
03
International High-End Coating — TiAlN composite coating, friction coefficient 0.15, burr-free aluminum machining
04
100% Factory Inspection — Strict control at every step from raw material to finished product
05
Factory Direct in Changan, Dongguan — Factory direct from Changan, Dongguan, no middleman markup
4800MPa
Bending Strength
Industry average 3500MPa
Industry average 3500MPa
HRC67
Tool Hardness
0.15
TiAlN Coating
Friction coefficient
Friction coefficient
100%
Factory inspection
Pass rate
Pass rate
PRODUCT SPECS
Full Range Specifications
Full angles 60-120° · Sizes 8-30mm · Cobalt HSS · TiAlN Nano Coating
Angle Options
60°
82°
90°
100°
110°
120°
Metric 90° / Imperial 82° / Aerospace 100°
Diameter Options
φ8
φ10
φ12
φ14
φ16
φ20
φ25
φ30
Fits M3-M12 countersunk screws
Material & Coating
✅ Cobalt HSS Material（HSS-E）
✅ TiAlN Nano Coating(Hardness 3500HV)
✅ Arc-edge Design(Smooth Cutting)
✅ Custom Made(7-day Delivery)
APPLICATIONS
Core Applications
Professional countersinking solutions for sheet metal, enclosures, automotive and more
Sheet Metal Fabrication
Countersinking on stainless / cold-rolled / aluminum sheets, deburring & chamfering, stable mass production
Enclosures & Cabinets
Chamfering screw holes on panels, flush and clean finish, high assembly quality
Automotive Parts
Countersinking on automotive sheet metal and interior parts, high precision and consistency
Machinery
Deburring & chamfering on machine housings and structural parts, protecting operators, better assembly quality
Electronics
Countersinking on thin sheets, flush screw heads, clean appearance
Aerospace
100° aerospace standard countersinking, high precision and reliability
VIDEO SHOWCASE
Product Performance Videos
Real machining scenes showing the performance of HSS-E cobalt countersinks
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Section 04
Quality Comparison & Cost Analysis
Behind the low price of cheap countersinks are hidden costs: frequent tool changes, poor accuracy and faster machine wear. Lihao Technology wins with quantifiable performance.
Tool Life ComparisonStandard ToolsLihao Tools
Standard coated tools: tool life only 1/3 of Lihao cobalt tools, frequent downtime and production loss
Lihao cobalt tools: HRC67 hardness + TiAlN coating, 3x longer tool life, less downtime
Precision ComparisonStandard ToolsLihao Tools
Standard Tools: angle error over ±0.3° (industry standard ±0.5°), affecting assembly precision, crooked countersinks and burrs
Lihao Tools: precision grinding controls angle tolerance for perfect fit between countersink and screw head, flush assembly
Machine Wear ComparisonStandard ToolsLihao Tools
Standard Tools: soft body (below 60HRC) deforms at high speed, accelerating spindle bearing wear, maintenance cost up 27%+
Lihao Tools: HRC67 hard body, stable cutting, protects machine spindle, extends machine life
Hidden Cost TimelineRisk
Hidden costs of cheap tools usually explode after 3-6 months: lower output, more rework and rising maintenance. The 30%-50% saved upfront is fully offset or worse.
Low price is not saving money - it just defers the cost to a 3-6 month burst
↓ 32.5%
Lihao tools cost 78% more per unit, but annual total cost drops 32.5% (excluding the benefit of longer machine life)
PRODUCTS
Product Center
Full angles 60-120° · Sizes 8-30mm · Cobalt HSS · Custom Made
View Solutions →
TESTIMONIALS
Customer Reviews
Chosen by 1000+ sheet metal factories, real customer feedback
Z
Mr. Zhang, Factory Manager
Sheet metal factory, Dongguan · 3-year partnership
★★★★★
"With standard countersinks, the tools often chipped on stainless steel and had to be replaced several times a month. After switching to Lihao cobalt countersinks, tool life tripled, the holes are smooth and burr-free - our customers praise our workmanship!"
L
Mr. Li, Manager
Enclosures manufacturer, Shenzhen · 2-year partnership
★★★★★
"We make enclosures and cabinets where appearance matters. Screw heads must sit flush with no burrs. Lihao countersinks are precise with tight tolerances - the countersinks fit screw heads perfectly, assembly quality improved greatly and our defect rate dropped 80%!"
W
Mr. Wang, General Manager
Hardware furniture factory, Foshan · 1-year partnership
★★★★★
"We make hardware furniture with lots of thin sheets. Standard tools used to deform the sheets and screw heads stuck out. Lihao\'s team recommended the right parameters for thin sheets and provided free on-site guidance. Now the products look great and customer satisfaction has improved a lot!"
Need a HSS-E Cobalt Countersink custom solution?
Lihao Technology team provides full support from selection to use, free process optimization, 48-hour fast delivery
18-Month WarrantyFree replacement for quality issues
48-Hour ResponseFast technical support
Free Process OptimizationProfessional technical support
✅
10x Compensation for FakesGenuine material, reliable quality