RUKO LOS-HSSCo-79 mm HSS-Co5 kierreporanterä 4,5 mm DIN 338

Twist drill bit with 4.5 mm diameter and 79 mm total length, manufactured from high-speed steel with 5% cobalt (HSS-Co5) for drilling in stainless steel and high-alloy steels. The fully ground split point with 135° point angle ensures self-centering and reduces walking.

Advantages

High cobalt content (5%) provides excellent heat resistance and wear resistance, extending tool life in tough materials. The split point design allows precise starting without center punching, while the bright finish reduces chip adhesion.

Suitable for

• Stainless steel
• High-alloy steels
• Cast iron
• Non-ferrous metals

Key specifications

• Material: HSS-Co5 (5% cobalt)
• Diameter: 4.5 mm
• Overall length: 79 mm
• Flute length: 47 mm
• Standard: DIN 338
• Shank type: Cylindrical
• Point angle: 135°
• Point type: Split point
• Cutting direction: Right-hand
• Tolerance: h8
• Surface finish: Bright (uncoated)
• Packaging quantity: 1 piece

Recommendations

Use with suitable cutting fluid for stainless steel to maximize tool life. Suitable for hand drills, pillar drills, and machining centers.