Value Collection 01220219 21/64 in Hss Jobber Drill Bit

Product Description

The VALUE COLLECTION 01220219 is a high speed steel jobber-length drill bit ground to a 21/64 inch (0.3281 inch decimal) diameter with a standard 118-degree point angle. It features a left-hand cutting direction and a regular spiral flute, making it well suited for reverse-rotation drilling applications such as extracting damaged or seized fasteners without a separate extractor. The bright, uncoated finish is standard for general-purpose HSS tooling. At 4-5/8 inches overall length with a 3-5/16 inch flute length, it falls within the conventional jobber-length range. Machinists, maintenance technicians, and metalworking tradespeople are the primary users of this bit.

This drill bit is intended for use in metals including steel and cast iron under standard shop or field drilling conditions. The left-hand spiral cuts on counterclockwise spindle rotation, which is the key application driver here — in many cases, the reverse torque generated during drilling will back a broken bolt or stud out of the workpiece before the hole is fully drilled through, saving significant labor. It is a general-purpose grade bit suitable for benchtop drill presses, hand drills set to reverse, and magnetic base drills configured for left-hand rotation.

Key Features

• Left-hand cutting direction for reverse-rotation drilling and broken fastener removal
• 21/64 inch diameter with standard straight cylindrical shank of matching 0.3281 inch diameter
• 118-degree standard point angle with web-thinned, tapered web configuration for easier starting
• Regular spiral flute, 3-5/16 inches long, for efficient chip evacuation in steel and cast iron
• High speed steel construction, bright and uncoated, for general-purpose metal drilling
• Jobber length at 4-5/8 inches overall for compatibility with standard drill chucks

Compatibility

Designed as a general-purpose left-hand jobber drill bit suitable for use in steel and cast iron workpieces with any standard drill chuck or collet that accepts a 0.3281 inch straight shank.

Installation Notes

Left-hand drill bits require the drilling machine or hand drill to be set to reverse (counterclockwise) rotation before use. Secure the workpiece firmly before drilling to prevent rotation under torque. Use appropriate cutting fluid when drilling steel to extend bit life and improve cut quality. Machinists and maintenance mechanics should follow applicable shop safety standards and wear eye protection during all drilling operations.