DEWALT HSS-E Cobalt Jobber Drill Bit 4.8 mm, 10-Pack, DIN 338, Split Point 135°

Professional-grade HSS-E cobalt jobber drill bits engineered for high-performance drilling in tough materials. The 5% cobalt alloy (M35) delivers exceptional heat and wear resistance, making these bits ideal for stainless steel, high-alloy steel, cast iron, and other demanding metals. The 135° split point ensures self-centering and reduces walking, while the fully ground flutes provide efficient chip evacuation. Each pack contains 10 precision-ground bits with a 4.8 mm diameter, manufactured to DIN 338 standards with h8 tolerance for consistent accuracy.

Advantages

Superior cobalt alloy withstands high temperatures and maintains hardness, extending bit life. The split point design eliminates the need for center punching and allows faster penetration with less pressure. Ground flutes produce smooth, accurate holes and reduce friction. Suitable for use with stationary drills and hand-held drills with sufficient power.

Suitable for

• Stainless steel and acid-resistant steels
• High-alloy and hardened steels
• Cast iron and non-ferrous metals
• General metalworking and fabrication

Key specifications

• Diameter: 4.8 mm
• Material: HSS-E (High-Speed Steel with 5% Cobalt, M35)
• Point angle: 135° split point
• Shank: Straight, DIN 338
• Flute type: Ground, right-hand cut
• Tolerance: h8
• Quantity: 10 bits

Recommendations

For optimal results, use cutting fluid when drilling stainless or hardened steels, and operate at recommended speeds for the material. Store in a dry environment to prevent corrosion.