Import -20870-A Letter a Mechanics Drill Bit Hss

Product Description

The IMPORT -20870-A is a Letter A mechanics drill bit engineered for general-purpose drilling in metal and ferrous materials. Built from high-speed steel with an oxide finish, it features a 135-degree split point that reduces walking on contact and requires less feed pressure than a standard 118-degree tip. The web-thinned construction further eases penetration in harder workpiece materials. At 3.5 inches overall length with a 2-inch flute, this is a compact mechanics-length bit suited for work in confined spaces or close-clearance applications. The straight cylindrical shank seats securely in standard drill chucks without special tooling.

This bit is sized at 0.2340 inches (Letter A) and is intended for right-hand cutting in carbon steel, cast iron, high alloy steel, high tensile strength alloys, stainless steel, and general steel stock. It is a practical choice for maintenance mechanics, fabrication shops, and field service technicians who need a reliable mechanics-length bit for through-hole and clearance-hole drilling in production or repair environments. The spiral flute design provides efficient chip evacuation in these common workpiece materials.

Key Features

• 135-degree split point reduces bit walking and lowers required feed pressure
• Web-thinned tip with parallel web configuration for easier penetration in hard materials
• High-speed steel construction with oxide finish for wear resistance
• Mechanics length at 3.5 inches OAL keeps the bit maneuverable in tight spaces
• Straight cylindrical shank fits standard drill chucks without adapters
• Right-hand cut with regular spiral flute for efficient chip removal

Compatibility

Designed as a general-purpose mechanics-length drill bit compatible with any standard keyed or keyless drill chuck accepting a straight cylindrical shank. Suitable for drilling carbon steel, cast iron, high alloy steel, high tensile strength alloys, stainless steel, and general steel workpieces.

Installation Notes

Install in a standard drill chuck and tighten securely before use. Secure the workpiece to prevent movement during drilling. Apply cutting fluid or coolant when drilling stainless steel or high alloy materials to extend tool life and improve hole quality. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.