Hertel 61699815 Screw Machine Drill Bit Wire 56 Hss

Product Description

The HERTEL 61699815 is a screw machine length drill bit designed for high-speed steel cutting in close-tolerance drilling applications. Built from high-speed steel with an oxide coating, this bit features a standard 118-degree split-free point and a straight-cylindrical shank for secure chuck engagement. At 1.375 inches overall length and a flute length of 0.5 inches, the stub-length geometry provides increased rigidity over jobber-length bits, reducing deflection when drilling in confined spaces or on drill presses. The wire gauge size is 56, equivalent to 0.0465 inches in decimal. Two spiral flutes in a regular helix evacuate chips efficiently during right-hand cutting operations.

Screw machine length drill bits are commonly used in production environments, machine shops, and field service work where shorter bit length reduces chatter and improves hole accuracy. This bit is suited for drilling through mild steel, aluminum, brass, plastics, and similar general-purpose materials. The stub-length design makes it practical for use in tight clearance areas or on CNC drill presses, manual drill presses, and hand drills where a compact tool profile is required. It is typically installed and used by machinists, tool-and-die workers, and general maintenance technicians.

Key Features

• Wire gauge size 56 (0.0465 inches decimal equivalent) for precise small-diameter drilling
• High-speed steel construction provides durability across general-purpose materials
• Oxide finish improves lubricity and offers basic corrosion resistance
• 118-degree standard point angle for general-purpose material entry
• Stub screw machine length at 1.375 inches OAL increases rigidity and reduces deflection
• Right-hand cut with regular spiral flutes for efficient chip evacuation

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in any standard chuck accepting a straight-cylindrical shank at this diameter, conforming to ANSI specification designation.

Installation Notes

Installation and use of this bit is typically performed by machinists or maintenance technicians using a drill press, lathe, or hand drill with an appropriate chuck size. Ensure the chuck is fully tightened and the workpiece is securely fixtured before drilling to prevent bit walking or breakage at this small diameter. Use cutting fluid or lubricant when drilling metals to extend tool life. Always wear appropriate eye protection when operating any rotary cutting tool.