Hertel 89321384 Screw Machine Drill Bit Wire Size 4 Hss

Product Description

The HERTEL 89321384 is a screw machine length drill bit designed for general-purpose metal drilling in production and job-shop environments. Built from high-speed steel with a bright, uncoated finish, it delivers reliable performance across a wide range of workpiece materials. The 118-degree split-free point provides a conventional cutting geometry suited to most ferrous and non-ferrous metals. At 2.375 inches overall length, the stub-length body offers increased rigidity compared to jobber-length bits, reducing deflection in short-hole drilling applications. Licensed machinists, tool-and-die workers, and maintenance technicians routinely specify this format for drilling in drill presses, CNC turret lathes, and hand-held equipment.

This bit corresponds to wire gauge size 4, equivalent to 0.2090 inch decimal diameter, falling within the 0.2000 to 0.2500 inch size range. The right-hand cutting direction and 1.25-inch flute length make it appropriate for through-hole and blind-hole operations in light-to-medium-duty fixtures. It is sold as a single unit and suits applications where individual replacement bits are needed rather than full index sets.

Key Features

• Wire size 4 — 0.2090 inch decimal diameter for precise bore sizing
• 118-degree drill point angle for conventional general-purpose cutting geometry
• High-speed steel construction provides good hardness and wear resistance for metal drilling
• Bright, uncoated finish — no coating buildup to alter diameter tolerance
• Stub screw machine length (2.375 inches OAL) increases rigidity and reduces deflection
• Right-hand cut compatible with standard drill press and CNC spindle rotation

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in standard drill chucks, turret lathes, drill presses, and CNC machining centers that accept straight-shank bits in the 0.2090 inch diameter range.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with cutting tool safety practices. Ensure the drill chuck or collet is fully tightened and the workpiece is securely fixtured before operation. Disconnect or de-energize the machine before changing bits. Follow applicable OSHA machine guarding standards and shop safety protocols when operating drilling equipment.