RUKO DIN 338 broca helicoidal HSS-Co 5% 4,3 mm, haste cilíndrica, afiação de ponta 135°

Twist drill bit with 4.3 mm diameter for precise drilling in hard materials. The 5% cobalt alloyed high-speed steel provides high heat resistance and wear resistance, while the split point grind ensures self-centering and reduces walking.

Advantages

Fully ground from HSS-Co with 5% cobalt for high hardness and heat resistance. Split point (cross-ground) with 135° point angle enables accurate positioning without center punching. Bright surface finish reduces chip adhesion. Cylindrical shank fits standard drill chucks. DIN 338 dimensions with h8 tolerance for consistent hole quality.

Suitable for

• Alloyed and unalloyed steel
• Cast iron
• Non-ferrous metals
• Plastics
• High tensile strength materials

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 4.3 mm
• Overall length: 80 mm
• Working length: 47 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point grind: Split point
• Surface finish: Bright
• Manufacturing process: Fully ground
• Tolerance: h8
• Direction of cut: Right-hand cutting

Recommendations

Use with cutting fluid or coolant when drilling in steel to extend tool life. Suitable for stationary drills and hand drills with adequate power.