Broca helicoidal HSSE cobalto NWKA 15 mm - DIN 338, afiação em cruz, para aço inoxidável

In a busy metalworking shop, a machinist reaches for this NWKA twist drill bit when a stainless steel workpiece demands a clean, accurate 15 mm hole. The HSSE cobalt alloy and 135° split point make quick work of tough materials, while the DIN 338 geometry ensures consistent performance in professional and industrial settings.

Key specifications

• Diameter: 15.00 mm
• Working length: 114 mm
• Total length: 169 mm
• Material: High-speed steel with 5% cobalt (HSSE / HSS-Co 5%)
• Standard: DIN 338
• Point angle: 135°
• Point type: Split point (self-centering)
• Shank: Cylindrical
• Flute: Right-hand cutting
• Surface finish: Bright / steam tempered
• Tolerance: h8
• Helix angle: Type N, 25–30°
• Manufacturing: Precision ground
• Suitable for: Stainless steel (INOX), acid-resistant steel, high-alloy steel, cast iron
• Packaging: 1 piece

Why choose it

The cobalt-enriched HSSE steel withstands high temperatures, preserving hardness and edge retention when drilling stainless and acid-resistant steels. The 135° split point reduces walking and requires less pilot drilling, while the bright finish aids chip evacuation for smoother holes.

Ideal use cases

• Drilling stainless steel sheet and plate in fabrication shops
• Creating precise holes in acid-resistant steel for chemical equipment
• Working on high-alloy steel components in maintenance and repair
• Drilling cast iron parts in machine building

Good to know

Use cutting fluid or suitable lubrication when drilling stainless steel to extend tool life. The cylindrical shank fits standard three-jaw chucks. This bit is not intended for use with hammer drills or impact drivers.