Import 20920 3/8 Inch Mechanics Drill Bit Hss Split Point

Product Description

The IMPORT 20920 is a mechanics-length twist drill bit designed for general-purpose hole drilling in metalworking applications. It features a 3/8 inch diameter, a 135-degree split point for self-centering starts without a center punch, and a Weldon flat shank for secure chuck retention with reduced slip. The body is machined from high-speed steel with an oxide finish that provides basic lubricity and mild corrosion resistance during cutting. With an overall length of 4.25 inches and a flute length of 2.6875 inches, this bit is sized for compact drilling tasks where a jobber-length bit would be excessive. Licensed tradespeople and machining technicians reach for this bit when access or depth constraints demand a shorter drill.

The IMPORT 20920 is suited for right-hand drilling in carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and general steel stock. The mechanics length is a common choice in maintenance, repair, and light fabrication environments where drill depth is limited by surrounding structure or tooling clearance. The three-flat Weldon shank mates with set-screw style chucks and holders used on drill presses, milling machines, and magnetic base drills. Web-thinned geometry reduces thrust force at the cutting edge, which is particularly useful when drilling harder alloys by hand or with lower-torque equipment.

Key Features

• 3/8 inch diameter with 135-degree split point for self-centering entry on metal surfaces
• High-speed steel construction handles general-purpose ferrous metal drilling
• Weldon flat shank with three flats prevents rotation slip in set-screw holders
• Oxide coating provides baseline lubricity and surface protection
• Web-thinned, parallel web geometry reduces cutting thrust on harder materials
• Mechanics length at 4.25 inches overall suits tight-clearance drilling scenarios

Compatibility

Designed as a general-purpose mechanics-length drill bit compatible with drill presses, milling machine spindles, and magnetic base drills equipped with Weldon flat or set-screw style chuck holders. Rated for use in carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and general steel workpieces.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with rotating cutting tools. Secure the Weldon shank fully in the chuck or holder and tighten all set screws before starting the spindle. Always wear appropriate eye protection and ensure the workpiece is clamped or fixtured before drilling. Inspect the cutting edges for wear or damage before each use and replace the bit if the point is chipped or the flutes are damaged.