Precision Twist Drill 6000640 Jobber Drill Bit 0.4724 in

Product Description

The PRECISION TWIST DRILL 6000640 is a jobber-length twist drill bit designed for general-purpose drilling in a wide range of materials. It carries a 0.4724-inch diameter with a 118-degree standard point angle and is manufactured from high speed steel with a bright, uncoated finish. The overall length is 5.9449 inches (151 mm), and the flute length runs 3.9764 inches (101 mm). Conforming to DIN 338 and ANSI standards, this bit belongs to the Series 2A line and features a web-thinned, tapered web for improved chip clearance and reduced thrust during drilling. It is installed by machinists, millwrights, HVAC technicians, plumbers, and general trade professionals who need a reliable, standard-duty bit.

This drill bit is suited for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. The right-hand spiral flute geometry and straight-cylindrical shank make it compatible with standard drill chucks across benchtop drill presses, magnetic drills, and handheld corded or cordless drill motors. It is a general-purpose bit appropriate for both light production and jobsite applications where a consistent, repeatable hole is required.

Key Features

• 0.4724-inch diameter with matching straight-cylindrical shank for true running in standard chucks
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction handles steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Right-hand, regular spiral flute with 2 flutes promotes chip evacuation during through-hole drilling
• Bright, uncoated finish — no coating buildup to affect hole tolerance
• Conforms to DIN 338 specification and ANSI standards; Series 2A classification

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard drill chucks accepting a 0.4724-inch straight-cylindrical shank, compatible with drill presses, magnetic base drills, and handheld drill motors across trade and light production environments.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before drilling. Power down the drill and de-energize any associated equipment before bit changes. Use cutting fluid or coolant when drilling stainless steel, superalloys, or titanium to prevent work hardening and premature bit wear. Do not force-feed the bit — allow the cutting geometry to set the feed rate appropriate to the material.