Hertel 85703973 Jobber Length Drill Bit Wire Size 20

Product Description

The HERTEL 85703973 is a jobber length drill bit designed for general-purpose drilling in metal, wood, and plastic. It is manufactured from high speed steel with a bright uncoated finish, making it well suited for standard shop and field applications where lubricated or coated tooling is not required. The bit has a 118-degree standard point angle, a regular spiral flute, and a straight-cylindrical shank measuring 0.1610 inches in diameter. Overall length is 3.25 inches with a flute length of 2.125 inches. The web-thinned, tapered web configuration reduces thrust when starting and penetrating material. This bit is sized to wire gauge Number 20, equivalent to 0.1610 inches decimal, and is installed by machinists, maintenance technicians, and trade professionals working with standard drill chucks.

This drill bit is intended for general purpose drilling operations in light to medium duty applications. Wire size Number 20 at 0.1610 inches falls within the 0.1500 to 0.2000 inch decimal range, making it a common selection for tapping prep, clearance holes, and precision layout work in sheet metal, structural steel, aluminum, and similar materials. The right-hand cut and standard spiral flute suit most bench drill presses, hand drills, and CNC drilling operations. It is sold individually but subject to a minimum order quantity of 12 units per purchase.

Key Features

• Wire size Number 20, 0.1610 inches decimal diameter
• 118-degree standard point angle with web-thinned tapered web for reduced entry thrust
• High speed steel construction for general purpose drilling across metals and plastics
• Bright uncoated finish compatible with cutting fluids and dry drilling
• Regular spiral flute, right-hand cut, 2-flute configuration
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a general purpose jobber length drill bit compatible with any standard drill chuck accepting a 0.1610-inch straight-cylindrical shank, including bench drill presses, hand drills, and CNC spindles within the 0.1500 to 0.2000 inch drill size range.

Installation Notes

This bit is installed and replaced by machinists, maintenance technicians, and trade professionals using a standard keyed or keyless drill chuck. Secure the shank fully in the chuck before operation and verify chuck key is removed before energizing the drill. Use appropriate cutting fluid for ferrous metals to extend tool life. Inspect the cutting edges for wear or chipping before each use and replace bits that show visible edge breakdown to avoid workpiece damage or bit failure.