Irwin Tools 585-54009 9-piece bolt extractor set pneumatic accessory
- Drill Bits
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A 11/16 inch high-speed steel drill bit with a 118-degree point angle and 1/2 reduced shank for drilling larger holes
The Chicago-Latrobe 55444 is a Silver & Deming drill bit designed for drilling larger diameter holes with a standard drill chuck. It suits machinists and maintenance technicians who need a 11/16 inch cutting diameter on a 1/2 inch reduced shank. The 118 degree point angle provides a conventional geometry for general purpose drilling tasks.
The bit is manufactured from high speed steel and features a black oxide finish for corrosion resistance and reduced friction during operation. The reduced shank allows the large cutting diameter to be used in power tools equipped with a 1/2 inch chuck capacity. This configuration makes the tool compatible with common bench drills and heavy duty handheld units without requiring a larger chuck.
This drill bit replaces worn or damaged large diameter twist drills used in steel, cast iron, and other ferrous materials. The upgrade is worth it when an existing bit no longer cuts cleanly or has lost its point geometry. It is not suited for buyers who need a split point for self-centering, a cobalt alloy for high heat applications, or a different shank configuration for specific tool holders.
Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.
| Product | |
|---|---|
| Brand name | CHICAGO-LATROBE |
| Product type | Drill Bits |
The 118 degree point angle is a general-purpose geometry that centers well in metal, wood and plastic without needing a pilot hole.
The reduced 1/2 inch shank fits any three-jaw chuck that opens to 1/2 inch or larger, so it works in most standard drills and drill presses.
Open the chuck fully, insert the shank until it seats against the jaws, then tighten each jaw evenly with the key or sleeve — skipping the final snug turn is the step most people miss.
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