Milwaukee
Milwaukee 3/16 in. Cobalt RED HELIX Thunderbolt Twist Drill Bit (48-89-2309)
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SKU 48-89-2309
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Details
3/16 in. cobalt twist drill bit
Milwaukee’s RED HELIX cobalt twist bit is engineered for hard metals, delivering longer life and faster holes. A variable 35°–15° helix, Quad Edge tip, and thicker tapered web enhance strength, chip removal, and precision in steel, stainless, and more.
Key Features:
- Long-Life Cobalt Construction: Up to 15x life vs. black oxide bits in hard metal applications
- Quad Edge Split Point: Reduces heat and walking for faster, accurate starts
- Variable Helix Flutes: 35°–15° design accelerates chip evacuation for quicker drilling
- Thicker Tapered Web: Reinforces core for durability under heavy loads
- 3-Flat Secure-Grip Shank: Prevents bit slipping in the chuck for consistent performance
Specifications Table:
| Specification | Details |
|---|---|
| Bit Diameter | 3/16 in |
| Bit Length | 3.5 in |
| Drilling Depth | 2.3125 in |
| Bit Material | Cobalt |
| Drill Bit Type | Twist |
| Drill Bit Type(s) Included | Twist |
| Shank Style | Straight, 3-Flat Secure-Grip |
| Shank Diameter | 3/8 in |
| Individual/Set | Individual |
| Number of Pieces | 1 |
| Pack Size | 1 |
| Material Application | Aluminum, Cast Iron, Duct/Sheet Metal, Stainless Steel, Steel; also PVC and Wood |
| Point Type | 135° split point |
| Tools Product Type | Power Tool Accessory |
| Item Weight | 0.03 lb |
Frequently Asked Questions (FAQ):
Q: What materials can this bit drill?
A: Designed for hard metals including steel and stainless steel, plus cast iron, duct/sheet metal, aluminum, PVC, wood, and more.
Q: What is the bit size and length?
A: Bit diameter is 3/16 in. with an overall length of 3.5 in.
Q: What shank type does it use?
A: Straight shank with 3-flat Secure-Grip to reduce chuck slippage.
Q: Can I use it in a standard drill/driver?
A: Yes, it fits all common drill/drivers with standard chucks.
Q: How does it start holes accurately?
A: A 135° split point helps prevent walking and improves precision starts.
Industrial Precision with Enduring Edge
This sleek cobalt bit brings a refined, industrial confidence to the workshop, punching crisp holes through stainless like a sculptor’s chisel. Its variable helix spirals feel almost architectural—purposeful and fast. Style it in a magnetic bit rail beside brushed steel tools for a clean, elevated bench vignette. A staple for any luxury-level toolkit, it marries performance with polished restraint.
Drill cleaner, faster holes in hard metals—add this Milwaukee 3/16 in. cobalt bit to your cart now.
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