1/8 Cobalt Drill Bit
| Weight | 0.035000 |
|---|
1/8 Cobalt Drill Bit
Engineered for high-performance drilling in the toughest materials, this 1/8" Cobalt Drill Bit is designed for metal fabricators and MRO professionals. Its M35 cobalt steel construction provides exceptional heat and abrasion resistance, ensuring a longer cutting life when working with stainless steel, cast iron, and other hardened alloys.
- M35 Cobalt Steel (5% Co)
- 135° Split-Point Geometry
- High Heat Resistance (up to 1100°F)
- Stainless Steel & Hard Metals
This industrial-grade 1/8 Cobalt Drill Bit is manufactured from M35 high-speed steel alloyed with 5% cobalt (Co). This composition significantly increases the bit's hardness and heat resistance, allowing it to operate at higher speeds and withstand temperatures up to 1100°F without losing its cutting edge. The precision-ground 135° split-point tip prevents “walking” on the material surface, ensuring clean, accurate starts without the need for a center punch. This design provides aggressive, self-centering cutting action, making it superior to standard HSS bits for demanding industrial applications.
Ideal for MRO and fabrication projects, our cobalt drill bits excel at drilling into abrasive and difficult-to-machine materials. They are the preferred choice for creating holes in stainless steel frames, drilling out broken bolts made of hardened steel, and performing maintenance on heavy machinery. Available from our Los Angeles warehouse, these bits provide the durability and performance required for commercial fabrication, automotive repair, and aerospace maintenance, ensuring consistent results and reducing tool changeover time on critical jobs. Order bulk 1/8 cobalt drill bits for your next project.
Specifications
- Material: M35 High-Speed Steel with 5% Cobalt
- Standards: ANSI/ASME B94.11M
- Point Geometry: 135° Split-Point
- Dimensions: 1/8" Diameter
- Finish: Bronze or Gold Oxide
- Certifications: ANSI Compliant
Applications
- Metal Fabrication: Drilling pilot holes and component mounting holes in stainless steel sheet and structural alloys.
- MRO (Maintenance, Repair, Operations): Removing broken fasteners and drilling into hardened equipment parts and machinery frames.
- Automotive & Marine: Working on exhaust systems, engine components, and stainless steel marine hardware.
- Construction: Drilling into steel beams, brackets, and other high-tensile metal construction hardware on site.
Target Users
These industrial-grade cobalt drill bits are essential tools for metal fabricators, maintenance technicians, mechanics, and machinists who require reliable drilling performance in hard, abrasive metals where standard HSS bits would fail prematurely.
Finish Options
Cobalt drill bits typically feature a bronze or gold oxide surface finish. This finish is not a coating but a result of the heat treatment process, which helps reduce friction and demonstrates the bit's heat-resistant properties. This surface treatment enhances chip flow and increases overall durability.
How to Measure
Specify drill bits by their diameter, which represents the size of the hole they create. Ensure you also select the correct material type (Cobalt for hard metals) and overall length if your application has depth constraints.
Example: Product: Cobalt Drill Bit, Diameter: 1/8", Quantity: 144 (1 Gross)
Order Checklist
- Drill Bit Diameter and Length (e.g., 1/8" Jobber Length)
- Material (Cobalt) and Quantity required
- Shank Type (e.g., Straight Shank)
- Finish/Coating requirements (if any)
- Certifications required (Certificate of Conformance)
- Packaging (e.g., bulk packs, individual sleeves)
Quick Facts
- Product
- 1/8 Cobalt Drill Bit
- Material
- M35 Cobalt Steel (5% Co)
- Standards
- ANSI/ASME B94.11M
- Key Properties
- High heat resistance (1100°F), 135° split-point tip for precision drilling in hardened metals.
- Primary Applications
- Stainless Steel, Cast Iron, Hard Alloys
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
Our warehouse stock in Los Angeles includes a comprehensive range of cobalt drill bits in fractional sizes (from 1/16" to 1/2" and larger), as well as number and letter gauge sizes. We offer individual bits and complete indexed sets.
Custom sizes and cutting services are available.
Contact for Sizing-
1/8 Cobalt Drill Bit$4.97
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1/4 Cobalt Drill Bit$9.35 -
1/2 Cobalt Drill Bit$5.99