RUKO KEB-HSSCo-Mod.55-20.0mm HSS-Co Twist Drill Bit DIN 338

Drilling large-diameter holes in tough steels and stainless alloys demands a bit that resists heat and wear. The RUKO KEB-HSSCo-Mod.55-20.0mm meets this challenge with a cobalt-alloyed high-speed steel body and a precise DIN 338 geometry, delivering clean 20 mm holes in demanding materials.

Who is it for

Professional machinists, metal fabricators, and maintenance technicians who regularly drill steel, stainless steel, cast iron, and non-ferrous metals. It fits standard drill chucks and is intended for stationary drilling machines or powerful handheld drills.

Main features

• HSS-Co with 5% cobalt for high heat resistance and extended tool life
• Ground twist drill bit, type N, right-hand cutting, 118° point angle
• 20.0 mm diameter with cylindrical shank, total length 205 mm, working length 130 mm
• Bright / bronze surface finish
• Conforms to DIN 338

Specifications

• Material: HSS-Co (High-Speed Steel with Cobalt)
• Standard: DIN 338
• Drill Bit Type: Twist Drill Bit
• Type: N (Normal Helix Angle)
• Diameter: 20.0 mm
• Shank Type: Cylindrical
• Shank Diameter: 20.0 mm
• Total Length (L1): 205 mm
• Working Length (L2): 130 mm
• Point Angle: 118°
• Cobalt Content: 5%
• Manufacturing Process: Ground
• Cutting Direction: Right-hand cutting
• Recommended Application: Steel, Stainless Steel, Cast Iron, Non-ferrous Metals
• Surface Finish: Bright / Bronze
• Tool Holder Compatibility: Drill Chuck
• Packaging Quantity: 1 piece

Tips

Use a cutting fluid or coolant when drilling steel and stainless steel to dissipate heat and prolong bit life. For best results, pre-drill a pilot hole with a smaller diameter bit and operate at the recommended speed for the material.