NACHI 6520 Cobalt Straight Shank Drill: Efficient Solution for Stainless and Non-Ferrous Metals

【Product Name】The NACHI Cobalt HSS Straight Shank Drill (Model: 6520) is a high-versatility tool engineered for multi-material drilling. It primarily addresses edge wear in heat-generating stainless steel and material welding issues in aluminum alloys.

【Key Features & Benefits】

• HSS-CO Thermal Stability: Crafted from Cobalt High-Speed Steel (HSS-CO), this drill maintains its hardness at high cutting temperatures. This is a practical recommendation for ISO M materials (SUS304/316) where work-hardening is a concern.

• 135° Point Angle for Self-Centering: The 135-degree point angle improves centering precision and reduces walking during entry, allowing for more accurate hole placement without extensive spotting.

• Optimized Helix (24~36°): The variable helix design ensures excellent chip evacuation. For ISO N materials (Aluminum, Copper), it provides smooth cutting action and minimizes the formation of built-up edges (BUE).

• Cost-Effective Straight Shank: The straight shank design ensures compatibility with standard chucks and collets. Offering superior durability over standard HSS at an affordable price point, it is a reliable choice for mass production and general maintenance.

【Applications & Usage】

• Primary Applications: Widely used in mechanical components and maintenance tasks for general drilling, especially on manual or conventional automated machines.

• Recommended Materials:

  • ISO M (Stainless Steel): Tackles thermal friction in high-ductility alloys.

  • ISO N (Aluminum, Copper): Prevents sticking and ensures dimensional accuracy.

  • ISO P (Carbon/Alloy Steel): Provides a low-cost, high-performance solution for steels under HRC30.