
Hole Saws & Step Drills
HSS M35 5% Cobalt Step Drill Bit 3-Piece Set (4-12/20/32mm) for Stainless Steel
Industrial HSS M35 5% Cobalt Step Drill Bit (Spiral Flute) for Stainless Steel & Hard Metals
Quick Specifications
| Product Name | Titanium Coated Spiral Flute Step Drill Bit Set |
|---|---|
| Drill Type | Step Drill Bit |
| Material | High Speed Steel (HSS 4241/M35) |
| Surface Finish | Titanium Coated (Gold) |
| Flute Type | Spiral Flute |
| Sizes | 4-12mm, 4-20mm, 4-32mm (3-Piece Set) |
| Shank Type | Tri-Flat Shank (Anti-slip) |
| Application | Sheet Metal, Aluminum, Wood, Plastics |
| Package | Customizable (White box / Plastic box / Blister) |
| MOQ | 1 Set |
- Factory Direct Pricing
- Strict Standard QC
- Support OEM / Custom Packaging
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Product Details
Industrial HSS M35 5% Cobalt Step Drill Bit Set (Straight Flute, Titanium Coated)
The Ultimate All-in-One Drilling Solution for Hard Metals
Streamline your metalworking tasks with Xiaoman Tools' Premium HSS M35 Cobalt Step Drill Bits. Engineered for high-performance rotary use, a single tool allows you to drill and enlarge a variety of precise hole diameters without changing bits. Formulated with 5% Cobalt and featuring a durable titanium coating, these bits effortlessly penetrate sheet metals, pipes, and thick plastics up to 5mm, making them an indispensable asset for electricians, plumbers, and metal fabricators.
Key Technical Advantages
- 135° Split Point Tip: Features an aggressive self-centering 135-degree split point that bites into hard metal instantly. It increases cutting speed and ensures the drill does not run off center or "walk" upon contact.
- Optimized Two-Flute Design: The precision-ground straight twin-flute design guarantees exact hole dimensions, provides significantly longer tool life, and ensures smooth, rapid chip removal during operation.
- Unmatched Versatility: Perfectly designed for drilling and enlarging multiple holes in thin sections of stainless steel, sheet metals, copper, plexiglass, plastics, and wood (up to a maximum thickness of 5mm).
- M35 5% Cobalt & Titanium Coated: Manufactured from industrial-grade M35 High-Speed Steel with 5% Cobalt for extreme heat resistance, enhanced by a golden titanium coating to reduce friction and wear.
- Anti-Slip Tri-Flat Shank: The machined 3-sided flat shank ensures a secure, positive grip in standard drill chucks, eliminating slippage under high torque. (Note: For rotary use only, not for impact).
Technical Specifications
| Brand / Manufacturer: | Xiaoman Tools (Shanghai, China) |
| Material: | HSS M35 (5% Cobalt) |
| Surface Finish: | Titanium Coated (Gold) |
| Flute Type: | Twin Straight Flute |
| Tip Angle: | 135° Split Point (Self-Centering) |
| Max Drilling Thickness: | Up to 5mm |
| Operating Mode: | Rotary Use Only |
| Customized Support: | OEM & ODM (Laser Logo, Packaging Sets) |


