Three-Flats Shank Heavy Duty HSS Pilot Point Tip Drill Bits For Stainless Steel

SUBORUI Heavy-Duty M35 Cobalt HSS Drill Bits — Pilot Point Tip & Three-Flats Shank for Stainless Steel Drilling

Overview

Eliminate slipping and precision errors in your workshop with the SUBORUI Pilot Point & Three-Flats Shank Drill Bit. Engineered for the most demanding heavy-duty metalwork, these bits combine the heat resistance of Cobalt-enriched High-Speed Steel with advanced geometric designs. The unique “Three-Flats” shank ensures maximum torque transfer without chuck slippage, while the “Pilot Point” tip provides immediate centering for clean, burr-free holes in stainless steel and high-tensile alloys.

Key Selling Points

1. Precision Pilot Point Tip: Starts drilling on contact with no “walking” or center punch required. This self-centering geometry ensures perfectly round holes and faster penetration through hard surfaces.
2. Anti-Slip Three-Flats Shank: Specifically designed for keyless and keyed chucks alike. The three flat surfaces provide a secure grip, preventing the bit from spinning or slipping under high torque—ideal for deep-hole drilling in thick metals.
3. Heavy-Duty Cobalt Infused HSS: Forged with a premium Cobalt alloy to withstand extreme heat. These bits maintain their cutting edge and structural integrity even during continuous drilling in abrasive materials like SS304 and SS316.
4. 135° Split Point Geometry: Reduces thrust force and heat generation at the tip. Combined with the 30° Type N flute, it ensures rapid chip evacuation and prevents clogging during intensive use.
5. Industrial Versatility: Optimized for a wide range of industrial equipment, including CNC machines, magnetic drills, and high-torque hand-held power tools.

Target Materials & Applications

• Stainless Steel: Series 200, 300 (SS304/SS316), and 400.
• Hardened Metals: Tool steel, alloy steel, and high-tensile carbon steel.
• Heavy Construction: Cast iron, spring steel, and forged metals.
• Aerospace & Marine: Non-corrosive alloys and specialized metal components.

   

   

  B2B Service & Supply

• Wholesale & Bulk Fulfillment: Tiered pricing available for industrial distributors and large-scale manufacturing procurement.
• OEM Customization: Support for custom branding, laser-etched sizing, and specialized packaging for high-volume partners.
• Global Logistics: Reliable export services with high stock levels for standard metric and imperial sizes.

Metric size

Imperial size