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Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Specifications
Surface :
coffee
Process :
Ti-coated,Black Oxide,Bright finished
Material :
M35
Type :
Twist bits
Name :
Cobalt Center Drill Bits
POINT: :
118/135 Split Point
Hardness :
HRC65-67
Brand Name :
XRTOOLS
Model Number :
3.5MM
Certification :
ISO9000
Place of Origin :
JIANG SU
MOQ :
500PCS
Price :
0.05-2.7$/PCS
Payment Terms :
T/T, L/C, D/P
Supply Ability :
400,0000Pcs Per Mouth
Delivery Time :
30-45days
Packaging Details :
Plastic box,Double Blister card
Use :
ceramic materials
Size :
1.5 2.5 3.5 4 5 6
Oem :
Available
Description

HSS-Co Center Drill Bit – TiAlN Coated Cobalt Steel Spotting Bit for Precision Metalworking

Cobalt Center Drill Bit with TiAlN Coating – For Spot Drilling and Chamfering Metal

As a specialized manufacturer of precision cutting tools, XRTOOLS brings decades of engineering experience to the development of advanced drill bits for industrial use. Our HSS-Co Center Drill Bit, treated with a TiAlN (Titanium Aluminum Nitride) coating, represents the fusion of metallurgical excellence, precision CNC manufacturing, and application-driven design.

This center drill bit is engineered for spotting, centering, chamfering, and pilot hole preparation across a wide range of hard metals. Constructed from 5% cobalt high-speed steel (HSS-Co), it offers excellent hot hardness and wear resistance, ensuring durability in high-speed machining environments.

Engineered by Professionals – Our Production Process

Each XRTOOLS center drill bit is produced under ISO-standardized procedures using industry-leading CNC equipment. Our commitment to quality ensures every tool exceeds the performance standards of metalworking professionals.

  1. Material Selection – HSS-Co with 5% cobalt for thermal resistance

  2. Forging & Roughing – High-pressure forged blanks ensure consistent grain structure

  3. CNC Milling & Grinding – Precision geometry on point angles and flute profiles

  4. Vacuum Heat Treatment – Achieving HRC 65–67 for edge retention

  5. TiAlN Coating – Advanced ceramic layer via PVD for heat shielding and lubricity

  6. 100% Quality Control – Runout, concentricity, hardness, and coating thickness tested

XRTOOLS tools are built to outperform in real-world industrial applications—delivering reliability, consistency, and service life demanded by today’s professionals.

Application Scenarios – Trusted Across Industries

Industry

Application

CNC Machining

Spot drilling and hole centering in precision part production

Lathe Turning

Center marking round workpieces before tailstock drilling

Metal Fabrication

Chamfered entry holes for bolts, rivets, or deep drilling

Aerospace / Automotive

Pre-drilling on alloy components exposed to high stress or heat

Mold & Die Workshops

Guiding holes on hardened blocks prior to threading or reaming

Maintenance / Tool Rooms

Fast alignment drilling for repairs and structural retrofits

Product Specifications: HSS-Co Center Drill Bit with TiAlN Coating

Feature

Details

Material

HSS-Co (Cobalt High-Speed Steel, 5% cobalt content)

Coating

TiAlN (Titanium Aluminum Nitride – dark grey/purple PVD coating)

Point Angles

60°, 82°, 90° (standard for center & countersink operations)

Available Sizes

1.0mm – 6.3mm / 1/32" – 1/4"

Tolerance

h8 on shank, precision-ground point and flute geometry

Hardness

HRC 65–67 after vacuum heat treatment

Flute Type

Straight flute – DIN 333 A / B compliant

Overall Length

38mm – 80mm depending on size specification

Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67

Packaging & OEM Capabilities

  • Individual Packaging: Plastic tube with label (customizable)

  • Bulk Options: 10 / 50 pcs in inner boxes or export cartons

  • OEM Branding Support:

    • Laser-marked logo and part number

    • EN/RU bilingual labels

    • Optional coating (TiN / TiCN / Black Oxide)

    • Custom size development available

Why Choose XRTOOLS?

  • Expertise in Cutting Tools – Over 20 years of R&D and OEM production

  • Advanced Manufacturing – Full CNC production line & automated QA systems

  • Global Supply Coverage – Serving clients across North America, Eastern Europe, and Asia

  • Application-Centered Design – Tools developed with feedback from real-world users

  • Consistency + Performance – Each tool delivers reliable, repeatable cutting results

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Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67

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Product Detail
Surface :
coffee
Process :
Ti-coated,Black Oxide,Bright finished
Material :
M35
Type :
Twist bits
Name :
Cobalt Center Drill Bits
POINT: :
118/135 Split Point
Contact Supplier
video
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67
Cobalt Center Hss Cobalt Drill Bits For Metal Spot Drilling HRC65 - 67

ZHANGJIAGANG FLAME MACHINERY CO.,LTD.

Verified Supplier
6 Years
yangzhou
Since 2018
Business Type :
Manufacturer, Exporter, Trading Company
Main Products :
HSS Drill Bit, Drill Bit Set, Masonry Drill Bit
Total Annual :
500-600
Employee Number :
135~150
Certification Level :
Verified Supplier
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