RUKO SPB-DIN338 11.0mm HSS-Co Twist Drill Bit

Drilling into high-alloy steels, stainless steels, or heat-resistant materials quickly dulls standard bits and creates excessive heat. This RUKO SPB-DIN338 11.0 mm twist drill bit is made from HSS-Co with 5% cobalt for high heat and wear resistance, so you can drill accurate holes in tough metals without premature failure.

Who is it for

Metalworkers, machinists, and serious DIYers who regularly drill stainless steel, cast iron, bronze, or hard plastics and need a bit that stays sharp and cuts cleanly.

Main features

• 11.0 mm diameter with DIN 338 standard dimensions
• HSS-Co with 5% cobalt for high heat resistance
• 135° split point for accurate starts without walking
• Fully ground bright finish for smooth chip removal
• Cylindrical shank fits standard drill chucks

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 11.0 mm
• Total length: 142 mm
• Working length: 101 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point grind: Split point
• Surface finish: Bright
• Manufacturing process: Fully ground
• Tolerance: h8
• Cutting direction: Right-hand

Tips

Use a cutting fluid or coolant when drilling tough alloys to extend bit life. For deep holes, withdraw the bit periodically to clear chips and reduce heat buildup.