RUKO SPB-DIN338-HSSCo8-Ø4,9mm τρυπάνι ελικοειδές

Twist drill bit with 4.9 mm diameter for professional metalworking, featuring 8% cobalt high-speed steel for high heat resistance and a split point for self-centering.

Advantages

Fully ground HSS-Co 8% twist drill bit according to DIN 338 with cylindrical shank and 135° split point. The split point provides excellent centering and reduces walking, while the cobalt alloy ensures high heat resistance and wear resistance for demanding applications.

Suitable for

• High-alloy steels
• Stainless steel
• Acid-resistant steels
• Cast iron
• Bronze
• Titanium alloys

Key specifications

• Drill bit type: Twist drill bit
• Material: HSS-Co 8% (High-Speed Steel with 8% Cobalt)
• Standard: DIN 338
• Diameter: 4.9 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point grind: Split point (self-centering)
• Cutting direction: Right-hand cutting
• Surface finish: Bright
• Manufacturing process: Fully ground
• Tolerance: h8
• Total length (l1): 86 mm
• Working length (l2): 52 mm
• Heat resistance: High
• Chip removal: Excellent

Recommendations

Use coolant for optimal performance and tool life.