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The CHICAGO-LATROBE 50331 is a taper length drill bit designed for general-purpose drilling in alloy steel, carbon steel, and cast iron. It measures 0.0960 inches in diameter, corresponding to wire gauge size 41, and features a 118-degree standard point angle with web thinning for improved centering and reduced thrust. The bit is manufactured from high speed steel and carries a coated finish that extends tool life during repetitive drilling operations. HVAC fabricators, pipefitters, electricians, and general metalworking trades commonly reach for this size when drilling pilot holes or clearance holes in ferrous materials.
This drill bit suits production and maintenance drilling applications across residential and light commercial job sites, as well as shop fabrication environments. The straight shank accommodates standard three-jaw chucks on drill presses and portable drills. The taper length body provides additional flute length compared to a jobber-length bit, allowing deeper chip evacuation in materials that generate long stringy chips. It is rated for general-purpose performance in alloy steel, carbon steel, and cast iron per the manufacturer specifications.
Designed as a general-purpose taper length drill bit for use in alloy steel, carbon steel, and cast iron. Compatible with any standard three-jaw chuck accepting a 0.0960-inch straight shank.
Install and remove drill bits only after the drill press or power tool has come to a complete stop and is unplugged or locked out per applicable safety procedures. Secure the straight shank fully within the chuck jaws and tighten with a chuck key before beginning any drilling operation. Use appropriate cutting fluid or lubricant when drilling ferrous metals to maintain edge life and reduce heat buildup. Wear eye protection at all times; chip hazards are present when drilling metal.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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