Precision Twist Drill 6000382 Reduced Shank Cobalt Drill Bit

Product Description

The PRECISION TWIST DRILL 6000382 is a reduced shank cobalt drill bit designed for drilling into ferrous metals and a range of non-ferrous materials. Built to Series R56CO specifications, it features a 25/32 inch (0.7812 inch decimal) cutting diameter with a 1/2 inch straight-cylindrical reduced shank, allowing it to fit standard 1/2 inch drill chucks despite the larger bit diameter. The 118-degree split point promotes accurate starting and reduces walking on entry. The bright, uncoated finish is standard for cobalt tooling intended for regrinding. This bit is installed and used by machinists, HVAC technicians, pipefitters, electricians, and general tradespeople who require a durable, heat-resistant drill bit for production or field work.

This drill bit is suited for drilling ferrous metals including steel and cast iron, as well as secondary materials such as aluminum, copper, magnesium, nickel, titanium, and certain synthetic materials. The reduced shank design is a practical solution when the required hole diameter exceeds the chuck capacity of a standard drill press or hand drill. With a 3 inch flute length and 6 inch overall length, it handles moderate drilling depths in both shop and field environments. Right-hand spiral flutes evacuate chips efficiently during through-hole and blind-hole operations.

Key Features

• 25/32 inch cutting diameter (0.7812 inch decimal) with 1/2 inch reduced straight-cylindrical shank for compatibility with standard 1/2 inch chucks
• Cobalt tool material provides heat resistance and extended tool life when drilling hard or abrasive metals
• 118-degree split point reduces thrust and improves self-centering on entry without a center punch
• 3 inch flute length supports drilling depths up to 3 inches with efficient chip evacuation via regular spiral flutes
• Bright, uncoated finish preserves cobalt substrate and simplifies regrinding
• Right-hand cut, ANSI-compliant, Series R56CO

Compatibility

Designed for use in 1/2 inch capacity drill chucks on drill presses, magnetic drills, and heavy-duty hand drills. Primary workpiece material is ferrous metal; rated for secondary use in aluminum, copper, magnesium, nickel, titanium, cermet, and synthetic materials per manufacturer specifications.

Installation Notes

Secure the reduced shank fully in the drill chuck and verify runout before beginning a cut. Ensure the workpiece is clamped or fixtured to prevent rotation during drilling. No coolant is required per manufacturer specification, though cutting fluid is commonly applied in shop settings to extend tool life when drilling steel. Inspect the split point for wear or chipping before reuse; cobalt bits may be reground by a qualified tool grinder.