RUKO SPB-DIN338-4,9mm HSSCo broca helicoidal

The RUKO SPB-DIN338-4.9mm HSSCo twist drill bit is precision ground from high-speed steel with 5% cobalt, giving it the heat and wear resistance needed for demanding materials. Its 130° self-centering point and h8 tolerance ensure accurate holes in alloyed and unalloyed steel, stainless steel, cast iron, and non-ferrous metals.

Highlights

• HSS-Co5 material for high heat resistance and long life
• DIN 338 standard dimensions: 86 mm overall length, 52 mm working length
• Bright finish, cylindrical shank, right-hand cutting
• Precision ground with h8 tolerance for accurate drilling

In daily use

Ideal for workshop and industrial applications where stainless and acid-resistant steels are common. The self-centering point reduces walking, and the cobalt alloy withstands high temperatures without losing hardness.

Full specifications

• Drill bit type: Twist drill bit
• Material: HSS-Co (5% cobalt)
• Standard: DIN 338
• Diameter: 4.9 mm
• Point angle: 130°
• Shank type: Cylindrical
• Flute type: Right-hand cutting
• Surface finish: Bright
• Manufacturing process: Precision ground
• Tolerance: h8
• Overall length: 86 mm
• Working length: 52 mm
• Suitable materials: Stainless steel, acid-resistant steel, heat-resistant steel, high-alloy steel, grey cast iron, spheroidal graphite cast iron, non-ferrous metals

Final note

A single-piece drill bit for professionals who need reliable performance on tough metals.