Hertel 89321707 Screw Machine Drill Bit Wire 25 Hss

Product Description

The HERTEL 89321707 is a screw machine length drill bit in wire gauge size 25, with a decimal diameter of 0.1495 inches. It is manufactured from high-speed steel (HSS) with a bright, uncoated finish and features a 118-degree split point for general-purpose drilling. The shorter overall length of 2-1/16 inches compared to jobber-length bits provides increased rigidity and reduces deflection in close-tolerance or confined-clearance applications. The right-hand cutting direction and 1-inch flute length make this bit suitable for production drilling on lathes, turret machines, and hand-held power tools. Licensed machinists, maintenance technicians, and industrial tradespeople are the primary users.

This bit is designed for general-purpose drilling in a range of materials including mild steel, aluminum, brass, and plastics. The screw machine length format is especially well suited to drill press work, CNC turret lathes, and screw machine operations where stub-length rigidity is required. The wire size 25 designation falls within the 0.1000 to 0.1500 inch decimal range, making it a common selection for tap-drill and clearance-hole work at smaller diameters.

Key Features

• Wire gauge size 25 with 0.1495 inch decimal diameter for precise hole sizing
• 118-degree drill point angle for general-purpose entry into ferrous and non-ferrous materials
• Screw machine (stub) length at 2-1/16 inches OAL increases rigidity and reduces bit deflection
• High-speed steel construction provides heat and wear resistance in production drilling environments
• Bright, uncoated finish for straightforward inspection and compatibility with cutting fluids
• Right-hand cut, standard configuration for conventional drill presses and hand tools

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in standard drill chucks, turret lathes, and CNC screw machines accepting wire-gauge-size tooling in the 0.1000 to 0.1500 inch diameter range.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with rotary cutting tools. Secure the bit firmly in a properly sized drill chuck or collet before operation and verify chuck runout is within acceptable tolerance to prevent premature bit breakage at this small diameter. Apply an appropriate cutting fluid when drilling ferrous materials to extend tool life. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point is damaged.