RUKO SPB-DIN1897-HSS-Co Twist Drill Bit 11.5 mm Short Series

Drilling precise holes in tough materials like stainless steel or alloyed steel demands a bit that stays sharp and centered. The RUKO SPB-DIN1897-HSS-Co twist drill bit with a 11.5 mm diameter solves this challenge with its cobalt-alloyed high-speed steel and split-point tip.

Who is it for

Professional metalworkers and demanding DIYers who need reliable, accurate holes in hard metals without wandering or frequent bit changes.

Main features

• HSS-Co steel with 5% cobalt for high heat resistance and durability
• Split point (135°) for self-centering and reduced walking
• Short series design (DIN 1897) for stable, precise drilling
• Fully ground flutes for smooth chip evacuation
• Bright finish, right-hand cutting, h8 shank tolerance

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 1897 (short series)
• Material: HSS-Co (5% cobalt)
• Diameter: 11.5 mm
• Shank type: Cylindrical, diameter 11.5 mm
• Total length: 94 mm
• Working length: 57 mm
• Point angle: 135°
• Point grind: Split point
• Cutting direction: Right-hand
• Surface finish: Bright
• Tolerance: h8
• Manufacturing: Fully ground
• Suitable for: Alloyed/unalloyed steel, stainless steel, cast iron, non-ferrous metals up to 1100 N/mm²

Tips

Use cutting fluid when drilling stainless steel to extend bit life. For best results, drill a pilot hole in very hard materials.