RUKO SPB-DIN338-12.4mm-HSSCo Twist Drill Bit

The RUKO SPB-DIN338-12.4mm-HSSCo is a precision-ground twist drill bit engineered for demanding metalworking tasks. Its 5% cobalt-alloyed high-speed steel (M35) construction delivers superior heat resistance and hardness compared to standard HSS bits, making it a reliable choice for stainless steel and other tough alloys.

Highlights

• 12.4 mm diameter with h8 tolerance for accurate holes
• DIN 338 standard geometry with 135° split point for reduced walking
• Fully ground flutes for efficient chip evacuation
• Bright finish for corrosion resistance and smooth cutting

In daily use

This drill bit excels in professional workshops where precision and durability are critical. The cobalt alloy maintains hardness at high temperatures, allowing higher cutting speeds and longer tool life. The 135° point angle centers quickly and reduces thrust pressure, while the cylindrical shank fits standard drill chucks securely.

Full specifications

• Drill Bit Type: Twist Drill Bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt, M35)
• Diameter: 12.4 mm
• Shank Type: Cylindrical
• Point Angle: 135°
• Flute Type: Standard Spiral Flute
• Surface Finish: Bright
• Cutting Direction: Right-hand cutting
• Tolerance: h8
• Overall Length: 151 mm
• Working Length (Flute Length): 101 mm
• Manufacturing Process: Fully Ground
• Recommended Application: Stainless Steel, Alloyed Steel, Cast Iron, Non-Ferrous Metals

Final note

A dependable cobalt drill bit for professionals who need consistent performance in hard materials.