Heavy Duty HSS Drill Bit DIN345 Taper Cobalt Steel Drill Bits For Cast Iron Pipe
M35 DIN345 Taper Shank Drill Bit – Cobalt Alloy Morse Taper Bit for Steel, Cast Iron & Tough Metals
Heavy-Duty M35 Cobalt DIN345 Taper Bit – Ideal for Cast Iron, Pipe, Beams, and Plates
The XRTOOLS M35 DIN345 Taper Shank Drill Bit is an industrial-grade cutting tool engineered for deep-hole, high-precision drilling in demanding materials like stainless steel, cast iron, and alloy steel. Manufactured from M35 high-speed cobalt steel (5% Co), this bit delivers exceptional hardness, red hardness, and abrasion resistance for long service life—even in high-temperature drilling applications.
Designed in strict accordance with DIN 345 standards, it features a Morse taper shank (MT1–MT5), allowing for direct, chuck-free installation in lathe tailstocks, radial drill machines, and boring mills.
Production Process & Geometry Details
Each M35 DIN345 bit is fully ground and CNC-milled to ensure high dimensional accuracy and consistent performance:
| Element | Detail |
|---|---|
| Manufacturing | CNC Milling & Precision Flute Grinding (fully ground body) |
| Material | M35 Cobalt HSS (5% cobalt) – superior heat & wear resistance |
| Point Design | Standard 118° point angle or optional 135° split point |
| Cutting Edge | Chisel edge with web thinning for reduced feed pressure |
| Flute Design | Straight flute with deep spiral groove for optimal chip ejection |
| Shank Type | Morse Taper (MT1 to MT5) with precise taper per DIN345 specs |
| Runout Tolerance |
Strict concentricity for vibration-free drilling |
This optimized geometry ensures fast centering, low cutting resistance, and accurate bore alignment, especially for large-diameter holes and deep-hole applications.
Application Scenarios
The M35 DIN345 taper shank drill is ideal for use in:
| Industry | Application Examples |
|---|---|
| Metal Fabrication | Drilling baseplates, steel frames, I-beams, and thick sections |
| Machining & Lathes | Center hole and deep boring in carbon steel, stainless, and hardened steels |
| Shipbuilding / Rail | Precision drilling in cast housings, weldments, and structural plates |
| Maintenance & Repair | Equipment retrofitting and bolt hole creation in heavy steel assemblies |
| Tool & Die Making | Boring holes in tool steel and alloy materials for dies, jigs, and press tooling |
Compatible with manual feed and CNC-controlled machines, this bit is perfect for professional workshops, machining centers, and heavy industry environments.
Product Specifications
| Feature | Details |
|---|---|
| Standard | DIN345 / ISO 235 |
| Material | M35 Cobalt High-Speed Steel (5% cobalt) |
| Diameter Range | 10mm – 50mm (3/8" – 2") |
| Shank Type | Morse Taper (MT1, MT2, MT3, MT4, MT5) |
| Point Angle | 118° standard / Optional 135° split point |
| Flute Type | Ground straight flute |
| Surface Finish | Bright / Black Oxide / TiN / TiAlN / Steam Tempered |
| Total Length | 150mm – 400mm (varies by diameter) |
| Tolerance | h8 (shank), m7 (cutting section) |
| Hardness | HRC 66–67 (M35 Co steel) |
Packaging & OEM Options
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Single Tube Packaging: Plastic case with size + spec label
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Bulk Box: 5 or 10 pcs per size – ideal for industrial distributors
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OEM Branding: Custom logo laser marking, bilingual packaging (EN/RU), TiN/TiAlN surface upon request
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Set Packaging: Metric or inch sets in metal boxes or plastic cassettes available
Why Choose XRTOOLS M35 DIN345 Drill Bits?
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High cobalt content for superior red hardness and lifespan
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Fully CNC milled for concentricity and precise entry
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Morse taper shank for direct-fit installation (no chuck slippage)
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Withstands high RPM and feed rates in automated machines
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Designed for industrial use in U.S., Europe, and Russian equipment standards
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.