Eagle Cutting Tool LHJ100-031-I Left-hand Jobber Drill Hss

Product Description

The EAGLE CUTTING TOOL LHJ100-031-I is a 31/64 inch high-speed steel (HSS) left-hand jobber-length drill bit designed for reverse-rotation drilling applications. Left-hand drills cut in the counterclockwise direction, making them the standard choice for extracting broken bolts, damaged fasteners, and seized screws without a separate extractor tool. The HSS construction provides adequate hardness and heat resistance for drilling into mild steel, aluminum, cast iron, and similar materials encountered in mechanical and maintenance trades. The jobber-length flute geometry offers a practical balance of reach and rigidity for most production and repair drilling tasks.

This drill bit is suited for use in maintenance, repair, and operations (MRO) environments where broken or stripped fastener removal is a routine task. HVAC technicians, plumbers, pipefitters, electricians, and general maintenance mechanics commonly keep left-hand drill sets on hand for extracting damaged fasteners from equipment housings, flanges, and structural members. The 31/64 inch diameter fills a specific size requirement in applications where standard fractional sizes fall short. It is intended for use in a drill press or reversible hand drill set to counterclockwise rotation.

Key Features

• Left-hand (counterclockwise) cutting direction for broken fastener extraction
• 31/64 inch diameter for precise sizing requirements
• High-speed steel (HSS) construction for hardness and heat resistance
• Jobber-length flute for balance of reach and rigidity
• Minimum order quantity of 1 — available as a single unit

Compatibility

Designed as a standard jobber-length left-hand drill bit for use in any reversible drill press or hand drill accepting a 31/64 inch shank. No specific OEM system compatibility was stated in the product data.

Installation Notes

Left-hand drill bits must be installed in a reversible drill or drill press set to counterclockwise rotation before use. Ensure the chuck is properly tightened and the workpiece is securely clamped before drilling. Use appropriate cutting fluid when drilling ferrous metals to extend bit life and reduce heat buildup. Always wear appropriate eye protection and follow applicable shop-safety practices when operating drilling equipment.

Technical Specifications

• Diameter: 31/64 inches
• Material: High-Speed Steel (HSS)
• Cut Direction: Left-hand (counterclockwise)
• Length Type: Jobber
• Weight: 1.2 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: LHJ100-031-I