Import -20870-S Mechanics Drill Bit Letter S Hss

Product Description

The IMPORT -20870-S is a Letter S mechanics drill bit designed for right-hand cutting in metal fabrication and maintenance applications. Built from high-speed steel (HSS) with an oxide finish, it delivers reliable performance across a range of ferrous materials. The 135-degree split point reduces walking on entry and lowers thrust required to start the hole. A three-flat Weldon shank prevents bit slippage in compatible chucks. Overall length is 4-3/16 inches with a flute length of 2-11/16 inches. This bit is sold individually with a minimum order quantity of 3 units.

This bit is suited for general-purpose drilling in carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and other ferrous steel workpieces. The mechanics length profile keeps the bit compact enough for use in tight spaces on machinery, structural steel, and fabrication setups where jobber-length bits may be impractical. It is a standard pick for machinists, maintenance technicians, and metal fabricators working on production or repair tasks.

Key Features

• Letter S diameter: 0.3480 inches for precise sizing in standard letter-series applications
• 135-degree split point reduces thrust and minimizes bit walking at hole entry
• High-speed steel construction handles heat generated during drilling in hard ferrous materials
• Three-flat Weldon shank prevents rotation in compatible drill chucks
• Oxide coating provides light corrosion resistance and reduces friction during cutting
• Web-thinned parallel web configuration improves chip clearance and cutting efficiency

Compatibility

Designed as a general-purpose mechanics-length drill bit for use with drill presses, magnetic drills, and handheld drills equipped with Weldon flat-shank compatible chucks. Suitable for drilling carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and similar ferrous workpieces.

Installation Notes

Installation and use should be performed by machinists or qualified maintenance technicians familiar with metal drilling operations. Secure the Weldon shank fully in the chuck before operation to prevent slippage. Always wear appropriate PPE including eye protection when drilling metal. Ensure the workpiece is clamped securely and the drill press or tool is powered down completely before changing bits.