1/4" X 4-1/4" COBALT INDUSTRIAL DRILL BIT, 135° SPLIT POINT
- Buy 20 or more $8.99 Save 18%
- Buy 50 or more $7.99 Save 27%
- Buy 100 or more $7.69 Save 30%
| Weight | 0.001437 |
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1/4" X 4-1/4" COBALT INDUSTRIAL DRILL BIT, 135° SPLIT POINT
Engineered for high-performance drilling in hard metals, this 1/4" cobalt drill bit delivers exceptional durability and heat resistance. The 135° split-point tip prevents 'walking' for clean, precise holes in stainless steel, cast iron, and other tough alloys.
- M35 High-Speed Steel (5% Cobalt)
- 135° Split Point
- Up to 1100°F
- Stainless Steel & Hard Metals
This industrial-grade drill bit is manufactured from M35 high-speed steel, an alloy containing 5% cobalt (Co). This composition significantly increases the bit's hardness and heat resistance, allowing it to maintain a sharp cutting edge at temperatures up to 1100°F. The 135° split-point geometry is self-centering, eliminating the need for a center punch and reducing the thrust required to start a hole. This design ensures faster penetration and extends the tool's service life when working with abrasive and high-tensile strength materials, making it a reliable choice for demanding MRO and fabrication tasks.
Ideal for metal fabricators, mechanics, and maintenance professionals in the Los Angeles area, this cobalt drill bit excels in drilling through tough materials where standard HSS bits fail. It is the preferred choice for applications involving stainless steel, cast iron, titanium, and other heat-treated steels. Its robust construction makes it suitable for use in both handheld drills and drill presses for projects ranging from equipment repair and machinery maintenance to custom metal fabrication and structural steel work. These commercial-grade bits provide the performance needed for consistent, high-quality results.
Specifications
- Material: M35 High-Speed Steel (5% Cobalt)
- Standards: Conforms to ANSI/ASME B94.11M for Twist Drills
- Hardness & Heat Resistance: High Rockwell Hardness, Heat Resistant to 1100°F
- Dimensions: Diameter: 1/4", Overall Length: 4-1/4"
- Finish: Gold or Bronze Oxide Surface Treatment
- Certifications: Certificate of Conformance available upon request.
Applications
- Metal Fabrication: Drilling precise holes in stainless steel plates, structural components, and custom parts.
- MRO (Maintenance, Repair, Operations): Repairing heavy machinery, vehicle frames, and industrial equipment.
- Automotive: Working on exhaust systems, engine components, and hardened steel parts.
- Construction: Drilling into metal studs, steel beams, and other structural construction hardware.
Target Users
This high-performance drill bit is essential for professional metalworkers, welders, fabricators, and MRO technicians in the Los Angeles industrial supply chain who require reliable cutting tools for hard, abrasive materials.
Finish Options
Cobalt drill bits typically feature a gold or bronze oxide surface treatment. This finish is not a coating but a result of the heat treatment process, which helps reduce friction, improve chip flow, and indicates the bit's high-performance cobalt composition.
How to Measure
Drill bits are specified by their diameter and overall length (OAL). The diameter is the width of the cutting head, which determines the hole size. The OAL is the measurement from the tip to the end of the shank.
Example: To order this specific product, request a '1/4" Diameter x 4-1/4" OAL, Cobalt Drill Bit'.
Order Checklist
- Verify drill bit diameter and length requirements
- Confirm material compatibility (Cobalt for hard metals)
- Specify quantity (single units or bulk packs)
- Note any special shank requirements (e.g., straight shank)
- Request certifications if needed (Certificate of Conformance)
- Confirm same-day pickup or delivery requirements
Quick Facts
- Product
- 1/4" X 4-1/4" COBALT INDUSTRIAL DRILL BIT, 135° SPLIT POINT
- Material
- M35 High-Speed Steel (5% Cobalt)
- Standards
- ANSI/ASME B94.11M
- Key Properties
- 135° split point, superior heat resistance, designed for hard metal drilling.
- Primary Applications
- Stainless Steel, Cast Iron, MRO, Fabrication
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We offer a comprehensive selection of industrial-grade cobalt drill bits. Our warehouse stock in Los Angeles includes fractional, letter, and number sizes, with common diameters from 1/16" up to 1" and beyond readily available for pickup.
Custom sizes and cutting services are available.
Contact for Sizing-
1/4" X 4-1/4" COBALT INDUSTRIAL DRILL BIT, 135° SPLIT POINT$10.99
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1/4 Cobalt Drill Bit$9.35 -
1/2 Cobalt Drill Bit$5.99 -
1/8 Cobalt Drill Bit$4.97