RUKO HSS-Co punta elicoidale 29/64 inch DIN 338 punta a lancia

Drilling tough materials like stainless steel or alloyed steel quickly dulls standard bits, causing wandering, overheating, and poor hole quality. This RUKO HSS-Co twist drill bit solves that with a cobalt-alloyed high-speed steel body and a self-centering split point.

Who is it for

Machinists, metal fabricators, and maintenance technicians who need reliable, precise holes in hard metals and general materials.

Main features

• HSS-Co (5% cobalt) for high heat and wear resistance
• DIN 338 jobber length, fully ground
• 135° split point for accurate starting without a center punch
• Right-hand cut, cylindrical shank
• Diameter: 29/64 inch (11.51 mm), h8 tolerance

Specifications

• Material: HSS-Co
• Standard: DIN 338
• Drill type: Twist drill (jobber length)
• Diameter: 29/64" (11.51 mm)
• Point angle: 135°
• Point type: Split point
• Shank type: Cylindrical
• Cutting direction: Right-hand
• Surface finish: Bright
• Total length: 142 mm
• Flute length: 94 mm
• Tolerance: h8
• Suitable materials: Alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals, plastics

Tips

Use cutting fluid when drilling stainless or hardened steels to extend bit life and improve finish.