Hertel 61699773 Screw Machine Drill Bit 0.07 in Hss

Product Description

The HERTEL 61699773 is a screw machine length drill bit designed for high-speed steel cutting in metal, wood, and general-purpose materials. It features a 0.0700-inch diameter corresponding to wire gauge size 50, a 118-degree standard point angle, and a two-flute spiral configuration. The shortened overall length of 1-11/16 inches compared to jobber-length bits provides added rigidity, reducing deflection in tight clearance or turret applications. An oxide finish improves surface hardness and provides basic lubricity during cutting. This bit is installed and operated by machinists, tool-and-die technicians, and maintenance professionals working with drill presses, CNC lathes, screw machines, and hand-held power tools.

This drill bit suits general-purpose production drilling in metal fabrication shops, maintenance facilities, and light manufacturing environments. The screw machine length format makes it a practical choice for turret lathes, automatic screw machines, and drill press setups where stub-length rigidity is preferred over extended reach. Wire gauge sizing at 50 is commonly referenced in precision hole work for small fasteners and tapping operations in ferrous and non-ferrous materials.

Key Features

• Wire gauge size 50 with 0.0700-inch decimal diameter for precision small-hole drilling
• 118-degree standard point angle for general-purpose use across a wide range of materials
• High speed steel construction with oxide finish for improved wear resistance
• Screw machine length at 1-11/16 inches overall provides rigidity and reduces deflection
• Right-hand cut with regular spiral flute and straight-cylindrical shank
• ANSI specification designation confirms dimensional compliance

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard straight-shank drill chucks on drill presses, turret lathes, automatic screw machines, and hand-held power drills accepting straight-cylindrical shanks in the 0.0000 to 0.1000-inch diameter range.

Installation Notes

Install in a compatible straight-shank chuck and verify chuck jaws are fully tightened before operation. Ensure the workpiece is securely clamped or fixtured to prevent rotation during drilling. Use appropriate cutting fluid or lubrication when drilling ferrous metals to extend bit life and maintain hole quality. Inspect the cutting edges for wear or chipping regularly, as small-diameter bits are susceptible to breakage under side-load or excessive feed pressure.