High Speed HSS Drill Bit 11mm Cobalt Tough Metal Steel Vision Stepped Drill Bit 3/8
XRTOOLS M35 Cobalt Stepped Point Drill Bit – Precision Drilling in Stainless Steel & Hardened Metals
M35 High-Speed Cobalt Drill Bit – Stepped Point Design for Tough Metal Drilling Applications
The XRTOOLS M35 Cobalt Stepped Point Drill Bit is a high-performance cutting tool engineered for clean, fast, and accurate drilling in hard metals, stainless steel, alloy steels, and cast iron. Featuring a stepped point design and made from premium M35 cobalt high-speed steel (5% cobalt content), this drill bit delivers extended life, exceptional heat resistance, and superior cutting efficiency—even in the toughest materials.
Designed for professionals who demand consistent results, this bit is widely used in metal fabrication, automotive repair, electrical installations, and heavy-duty maintenance work across North American and Russian markets.
Key Product Features
Material: M35 High-Speed Steel (HSS-Co), with 5% cobalt for extra hardness
Point Style: Stepped Point for faster centering and reduced bit walking
Tip Angle: 135° split point – self-centering, minimizes surface skidding
Flute Type: Straight or parabolic flute for optimal chip evacuation
Surface Finish: Bright, black oxide, or TiAlN available (customizable)
Drill Sizes: 1mm – 13mm / 1/16” – 1/2” (full size range available)
Shank Type: Straight shank or 3-flat shank for no-slip grip in chucks
Hardness: HRC 66–67, optimized for high-temperature applications
Recommended Applications
| Sector | Use Case Examples |
|---|---|
| Metal Fabrication | Drilling high-strength structural steel, pipes, angle iron |
| Automotive | Creating holes in chassis, engine blocks, or brackets |
| Electrical | Punching conduit knockouts in stainless steel boxes |
| Mechanical Repair | Drilling through hardened steel, bolts, fasteners |
| DIY / Workshop |
Projects involving stainless sinks, metal furniture, or tool steel plates |
Compatible with both hand drills and drill presses, this stepped point bit is ideal for professionals needing reliable entry-point accuracy without a pilot hole.
Available Specifications
| Size Range | Diameter Options |
|---|---|
| Metric Sizes | 1.0mm – 13.0mm (by 0.5mm / 1.0mm increment) |
| Inch Sizes | 1/16" – 1/2", full fractional and number sizes |
| Shank Types | Straight / 3-flat / Reduced Shank for large sizes |
| Finish Options | Bright / Black Oxide / TiAlN Coated (by request) |
| Packaging | Single Tube, 10pcs per box, or OEM set (3–29 pcs) |
Packaging Options
1. Retail Tube or Blister Card – with branded label & UPC
2. Bulk Pack – 10/20/50 pcs per box for workshops or distributors
3.OEM Options – Custom laser marking, EN/RU bilingual packaging, private label support
4. Drill Set Packaging – Available in steel box, plastic cassette, or zip case
Why Choose XRTOOLS M35 Stepped Point Bits?
1.Cuts cleanly into hardened steel and stainless steel
2.No pilot hole needed – stepped point guides instantly
3.Maintains edge sharpness under high RPM and load
4.Suitable for U.S. & Russian market drills and mounting standards
5.Proven performance in industrial and field environments
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.