Precision Twist Drill 5968494 Stub Drill Bit 1/8 in Hss

Product Description

The PRECISION TWIST DRILL 5968494 is a short-length stub drill bit designed for precision drilling in a wide range of materials. Built from high-speed steel (HSS) with a steam oxide finish, this bit features a 135-degree split point for accurate, self-centering entry and reduced walking on contact. The straight shank and 2-flute spiral design support clean chip evacuation in both ferrous and non-ferrous applications. With a 1/8 inch diameter and an overall length of 49 mm, it is sized for compact, controlled drilling where standard-length bits would be too flexible or unwieldy. Machinists, maintenance technicians, and trade professionals will find this bit suited to production and repair work alike.

This stub drill bit is applicable across a broad material range including aluminum, cast iron, copper, stainless steel, steel, magnesium, nickel, titanium, hard materials, and synthetic materials. Its short flute length of 18 mm and 2.5XD cutting depth make it well suited for rigid setups in drill presses, CNC machines, and hand-held drilling applications where minimal deflection is critical. The steam oxide coating reduces friction and provides light corrosion resistance during storage and use.

Key Features

• 135-degree split point for accurate, self-centering starts with minimal thrust force
• High-speed steel construction provides durability across ferrous and non-ferrous materials
• Steam oxide finish reduces friction and light surface corrosion
• Short stub length minimizes deflection in tight or deep-reach applications
• 2-flute spiral design promotes efficient chip evacuation
• No coolant channel — suited for dry or externally lubricated drilling operations

Compatibility

Designed as a short-length stub drill bit compatible with standard 1/8 inch straight-shank drill chucks on drill presses, CNC machines, and portable drilling equipment.

Installation Notes

Installation and bit changes should be performed with the machine fully powered down and the chuck key removed from the area. Secure the straight shank firmly in the chuck to the full depth of the jaws to prevent slippage and runout. This bit is intended for right-hand rotation only — verify spindle direction before operation. When drilling hard or abrasive materials, apply cutting fluid externally as needed; no internal coolant channel is present.

Technical Specifications

• Drill Diameter: 1/8 inch (0.125 inches)
• Overall Length: 49 mm
• Flute Length: 18 mm
• Number of Flutes: 2
• Flute Type: Spiral
• Shank Type: Straight, 1/8 inch
• Point Angle: 135 degrees
• Point Type: Split Point
• Cutting Direction: Right Hand
• Cutting Depth: 2.5XD
• Material: High Speed Steel (HSS)
• Finish: Steam Oxide
• Applicable Materials: Aluminum, Cast Iron, Copper, Hard Material, Magnesium, Nickel, Stainless Steel, Steel, Synthetic Material, Titanium
• Weight: 0.0661 pounds

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 5968494