RUKO SPB-DIN338-HSS-G špirálový vrták s krížovým brúsom 7,7 mm

Twist drill bit with cross-ground tip for precise self-centering and reduced walking in metal, plastic, and wood. Manufactured from fully ground high-speed steel (HSS-G) to DIN 338 with a 135° split point for fast chip evacuation and accurate hole positioning.

Advantages

Cross-ground (split point) tip minimizes walking and provides self-centering for accurate hole placement. Fully ground HSS-G construction ensures durability and consistent performance across a range of materials. Bright finish reduces friction and improves chip flow.

Suitable for

• Steel
• Cast iron
• Non-ferrous metals
• Plastics
• Wood

Key specifications

• Diameter: 7.7 mm
• Overall length: 117 mm
• Working length (flute length): 75 mm
• Material: High-speed steel (HSS-G), fully ground
• Tip type: Cross-ground (split point), 135°
• Shank type: Cylindrical
• Tolerance: h8
• Direction of cut: Right-hand
• Standard: DIN 338
• Surface finish: Bright

Recommendations

Use with a suitable drill chuck and appropriate cutting speed for the workpiece material. For best results, apply cutting fluid when drilling metals.