Hertel 61699088 Screw Machine Drill Bit 0.199 in Hss

Product Description

The HERTEL 61699088 is a screw machine length drill bit designed for general-purpose drilling in metal, wood, and plastic. Built from high speed steel (HSS) with an oxide finish, it delivers solid wear resistance and heat tolerance in typical shop and field applications. The 118-degree standard point angle suits a wide range of materials and is the most common configuration for general-purpose use. At 0.199 inches in diameter (Wire Size 8), this bit fits standard chucks and is sized for close-tolerance holes where a fractional bit would be too large. Licensed tradespeople and machinists reach for screw machine length bits when clearance is tight or rigidity matters more than depth.

Screw machine length drill bits are shorter than jobber-length bits, making them the preferred choice in confined spaces, turret lathes, drill presses, and hand drills where stub-length control reduces deflection. This bit is suited to production drilling, maintenance repair, and fabrication work in residential and commercial settings. Its straight-cylindrical shank seats securely in three-jaw chucks and quick-change holders across standard power tools.

Key Features

• High speed steel construction provides durability across a wide range of common workpiece materials
• Oxide finish reduces friction and provides mild corrosion resistance during storage and use
• 118-degree standard point angle for general-purpose drilling without specialized point geometry
• Regular spiral flute with 3xD flute-to-diameter ratio promotes efficient chip evacuation
• Straight-cylindrical shank is compatible with standard three-jaw chucks and quick-change holders
• Right-hand cut direction for use with conventional forward-rotation drilling equipment

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard three-jaw chucks and quick-change holders accepting a straight-cylindrical shank at 0.199 inches diameter.

Installation Notes

This bit is installed and operated by machinists, maintenance technicians, and tradespeople using standard drilling equipment. Secure the shank fully in the chuck before operation and confirm the workpiece is clamped or fixtured to prevent movement. Use appropriate cutting fluid or lubrication when drilling ferrous metals to extend bit life and improve hole quality. Inspect the cutting edges for wear or damage before each use and replace the bit if chipping or dullness is observed.