【Product Name】The NACHI G-Coated Standard HSS Drill (Model: 520P) is a versatile tool engineered for high-volume production. It primarily addresses excessive heat buildup and edge wear encountered when drilling stainless steel and alloy steels with conventional HSS bits.

【Key Features & Benefits】

• G (TiN) Coating Technology: The TiN surface treatment significantly increases surface hardness and reduces the friction coefficient. This is a practical recommendation for preventing material welding in ISO M materials (Stainless Steel), supporting stability up to HRC40.

• 118° Standard Point Angle: The classic 118-degree point geometry is compatible with most manual and CNC drilling setups. it effectively distributes cutting loads, providing a reliable entry in structural steels under HRC30.

• Optimized Helix (24~32°): Designed to maintain consistent chip flow even at moderate cutting speeds. For ductile materials with stringy chips, this helix range ensures evacuation without clogging.

• Cost-Performance Leader: By combining an HSS substrate with premium coating, the 520P offers significantly longer tool life than standard bits, making it the preferred choice for workshops focusing on reducing cost-per-hole.

【Applications & Usage】

• Primary Applications: Widely used in automotive components, industrial hardware, and general engineering tasks requiring consistent hole accuracy.

• Recommended Materials:

  • ISO M (Stainless Steel): Suppresses built-up edge (BUE) in tough alloys like SUS304.

  • ISO P (Carbon/Alloy Steel): Delivers stable performance and long tool life for steels under HRC30.