Alpha 5 Flute HSS Countersink - 12mm

The Alpha 5 Flute 90 degree HSS Countersink is engineered for stability, speed, and clean finishing. Manufactured from fully ground HSS-AL, it offers superior strength and longer tool life, even in hard and abrasive materials.

The five-flute geometry provides optimum stability and smooth cutting, making it ideal for stainless steel. Designed for machine use with controlled speed and feed rates, it ensures efficient countersinking with fine, chatter-free finishes.

FEATURES:
• Fully ground HSS-AL: Increases strength and tool life
• 5-flute construction: Provides maximum stability and reduces chatter
• High precision 90 degree cutting angle: Ensures clean and accurate results
• Ideal for stainless steel: Delivers fast productivity with a fine finish
• Recommended for machine use: For optimum results with accurate speed and feed

SPECIFICATIONS:
• Head diameter: 12mm (1/2")
• Overall length: 39mm
• Shank diameter: 6.35mm
• Range min–max: 1-12mm
• Countersink angle: 90 degrees
• Suits materials: Stainless steel, aluminium, cast iron, ferrous metals, plastics, wood
• Flutes: 5
• Material: Fully ground HSS-AL
• Manufacturer code: CS5-12

BEST APPLICATIONS:
• Stainless steel and other ferrous metals
• Hard plastics and hardwoods
• Precision countersinking requiring smooth finishes

DRILLING BEST PRACTICE:

• Use non-hammer drill settings for best results
• Apply cutting fluid when working in harder metals. We recommend SW140386 CRC CDT Cutting Liquid or an equivalent
• Maintain steady feed pressure to prevent chatter
• Withdraw periodically in deeper cuts to clear swarf
• Inspect cutting edges and regrind or replace when worn

Find the Alpha Countersinks Data Sheets HERE

Find the Alpha Countersink Comparison Guide HERE

Not what you are looking for, or need specialty tools? Please give us a call on 0800 080 4657 or email us on [email protected]. We are here to help.