RUKO SPB-DIN1897-HSSCo-Ø5.1mm Twist Drill Bit

Precision drilling in tough materials demands a bit that stays sharp and resists heat. The RUKO SPB-DIN1897-HSSCo-Ø5.1mm twist drill bit is engineered for exactly that, with a cobalt-alloyed high-speed steel body that withstands high temperatures and maintains its cutting edge.

Who is it for

Metalworkers, machinists, and serious DIYers who drill steel, stainless steel, cast iron, and non-ferrous metals. It suits materials up to 1100 N/mm² tensile strength, making it a reliable choice for demanding jobs.

Main features

• 5.1 mm diameter with h8 tolerance for precise holes
• 130° point angle for fast, accurate starts
• Ground from solid HSS-Co5 for durability
• Bright finish reduces friction and improves chip flow
• Short series per DIN 1897 for stability in handheld and machine use

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 1897 (short series)
• Material: High-speed steel with 5% cobalt (HSS-Co5)
• Diameter: 5.1 mm
• Shank type: Cylindrical (parallel)
• Point angle: 130°
• Tolerance: h8
• Surface finish: Bright
• Cutting direction: Right-hand cutting
• Overall length: 86 mm
• Flute length: 52 mm
• Application: Steel, stainless steel, cast iron, non-ferrous metals, plastics
• Maximum tensile strength: 1100 N/mm²
• Manufacturing process: Ground from solid

Tips

Use cutting fluid when drilling stainless steel or cast iron to extend bit life. For precise holes, center punch the workpiece and start at a lower speed before increasing.