Precision Twist Drill 5968487 Stub Drill Bit 1/4 Inch Hss

Product Description

The PRECISION TWIST DRILL 5968487 is a stub-length high speed steel drill bit designed for short-reach drilling applications where rigidity and precision matter. Built to a 1/4 inch diameter with a straight shank, this bit features a 135-degree split point for fast, self-centering starts without a center punch. The spiral flute geometry and steam oxide finish support chip evacuation and light corrosion resistance during use. With a 2-flute design and 2.5XD cutting depth, this bit is suited for machinists, maintenance technicians, and fabricators who need a compact, stable drilling platform in tight spaces or on drill presses.

This stub drill bit is appropriate for use in both manual and CNC drilling setups where reduced deflection is critical. Its shortened flute length of 31 mm and overall length of 70 mm reduce tool overhang and chatter compared to jobber-length bits. It is rated for use on a wide range of materials including aluminum, cast iron, copper, hard materials, magnesium, nickel, stainless steel, steel, synthetic materials, and titanium. Right-hand cutting direction is standard for conventional drilling operations.

Key Features

• 1/4 inch diameter with straight shank for standard chuck compatibility
• 135-degree split point for self-centering starts and reduced thrust
• HSS construction with steam oxide finish for durability and light corrosion resistance
• Stub length reduces deflection and improves hole accuracy in short-reach setups
• 2-flute spiral design supports chip clearance across a broad material range
• No coolant channel — suited for dry or externally lubricated drilling

Compatibility

Rated for drilling aluminum, cast iron, copper, hard materials, magnesium, nickel, stainless steel, steel, synthetic materials, and titanium. Straight shank fits standard 3-jaw drill chucks.

Installation Notes

Installation should be performed by machinists or qualified trade technicians familiar with proper drill press or CNC setup procedures. Secure the bit firmly in the chuck before operation and verify runout before drilling into finished workpieces. Always wear appropriate eye protection and secure workpieces with proper clamping. For stainless steel or hard materials, use appropriate cutting fluid to extend tool life even though this bit has no internal coolant channel.

Technical Specifications

• Drill Diameter: 1/4 inch (0.25 inches)
• Overall Length: 70 mm
• Flute Length: 31 mm
• Number of Flutes: 2
• Flute Type: Spiral
• Point Angle: 135 degrees
• Point Type: Split Point
• Shank Type: Straight, 1/4 inch
• Cutting Direction: Right Hand
• Cutting Depth: 2.5XD
• Material: High Speed Steel (HSS)
• Finish: Steam Oxide
• Coolant Channel: None
• Weight: 0.34 pounds

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 5968487