Meet the Irwin Turbomax 15/32 in. x 5-3/4 in. High Speed Steel Drill Bit with a Straight Shank—built for dependable, precise holes in metal and wood. Crafted from robust high-speed steel, this 1-piece drill bit is ready to tackle durable cutting tasks from the shop to the job site.
Designed for compatibility and versatility, it features a straight 3/8" shank and a total length of 5-3/4". The 15/32" drill size (0.46875") is ideal for larger pilot holes and clearance holes, while the flute length of 4-5/16" provides efficient chip evacuation and smoother cutting through tougher materials. The carded packaging keeps your tool organized and ready for quick selection when you need it most.
Key specifications
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Drill size: 15/32" (0.46875")
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Overall length: 5-3/4"
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Flute length: 4-5/16"
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Shank diameter: 3/8"
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Shank type: Straight
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Material: High Speed Steel
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Brand: Irwin Turbomax
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Packaging: Carded, 1 piece
Why this drill bit stands out
The Turbomax line from Irwin is built for professionals who value reliability and precision. The combination of a robust high-speed steel core and a straight shank ensures straightforward use in standard chucks, reducing slippage and allowing consistent hole starts. At 5-3/4" long, this bit reaches deeper into workpieces without requiring excessive workholding adjustments, making it ideal for deep-hole tasks in both metal and wood applications.
Best use cases
- Through-holes and clearance holes in mild steel, aluminum, and other metals
- Large-diameter pilot holes in hardwood and softwood for cabinetry, framing, or furniture projects
- Electrical and plumbing installations where deep, clean holes are needed
Practical tips for optimal results
- For metal drilling, use light to moderate cutting speed and apply steady pressure to maintain a clean cut and extend bit life.
- Clear chips frequently to prevent clogging and overheating—pause to back the bit out and remove debris as needed.
- Keep the edges sharp and inspect the flute for wear; replace when cutting performance drops to maintain accuracy.
- When drilling wood, consider a centered pilot hole to guide the bit and reduce tear-out on delicate grains.
