Hertel 89320790 Screw Machine Drill Bit 3/16 in Hss

Product Description

The HERTEL 89320790 is a screw machine length drill bit designed for general-purpose drilling in metal, wood, and plastic. The shortened overall length of 2-3/16 inches compared to a jobber-length bit reduces deflection and improves rigidity in tight-clearance setups, making it well-suited for drill press work, CNC applications, and hand-held operations where stability matters. The bit is ground from high-speed steel with a standard 118-degree point angle and a bright uncoated finish. The 3/16-inch diameter and 1-1/8-inch flute length suit a wide range of light-to-medium duty hole-making tasks. Right-hand cut orientation is standard for conventional drilling machines and handheld power drills.

This bit is used across general machining, fabrication, HVAC, plumbing, and electrical trade work wherever a compact, rigid drill bit is needed. The screw machine length profile is particularly useful when working in confined spaces or when using a drill press with limited quill travel. It is sold individually and suited for shops, service vans, and maintenance operations that require consistent, reliable performance on ferrous and non-ferrous materials.

Key Features

• 3/16-inch diameter with 0.1875-inch decimal equivalent for precise sizing
• 118-degree split-point-style conventional point for accurate starting on flat and curved surfaces
• High-speed steel construction for durability across a broad range of workpiece materials
• Screw machine length at 2-3/16 inches overall reduces flex and improves hole accuracy
• Bright uncoated finish suitable for general-purpose drilling without specialized coating requirements
• Right-hand cut compatible with all standard drilling equipment

Compatibility

Designed as a general-purpose replacement or stock drill bit for standard 3-chuck and keyed drill chucks accepting 3/16-inch round shank bits. Fits drill presses, CNC turret setups, and handheld power drills configured for right-hand rotation.

Installation Notes

Installation and use should follow standard machining safety practices. Secure the bit fully in the chuck and verify it is centered before operation. Use appropriate cutting fluid or lubrication when drilling ferrous metals to extend tool life. Wear proper eye protection and ensure the workpiece is clamped or fixtured before engaging the drill.