HSS M35 5% Cobalt Step Drill Bit 3-Piece Set (4-12/20/32mm) for Stainless Steel
Hole Saws & Step Drills

HSS M35 5% Cobalt Step Drill Bit 3-Piece Set (4-12/20/32mm) for Stainless Steel

Industrial HSS M35 5% Cobalt Step Drill Bit (Spiral Flute) for Stainless Steel & Hard Metals

Quick Specifications

Product NameTitanium Coated Spiral Flute Step Drill Bit Set
Drill TypeStep Drill Bit
MaterialHigh Speed Steel (HSS 4241/M35)
Surface FinishTitanium Coated (Gold)
Flute TypeSpiral Flute
Sizes4-12mm, 4-20mm, 4-32mm (3-Piece Set)
Shank TypeTri-Flat Shank (Anti-slip)
ApplicationSheet Metal, Aluminum, Wood, Plastics
PackageCustomizable (White box / Plastic box / Blister)
MOQ1 Set
  • Factory Direct Pricing
  • Strict Standard QC
  • Support OEM / Custom Packaging

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Product Details

Industrial HSS M35 5% Cobalt Step Drill Bit Set (Straight Flute, Titanium Coated)

The Ultimate All-in-One Drilling Solution for Hard Metals

Streamline your metalworking tasks with Xiaoman Tools' Premium HSS M35 Cobalt Step Drill Bits. Engineered for high-performance rotary use, a single tool allows you to drill and enlarge a variety of precise hole diameters without changing bits. Formulated with 5% Cobalt and featuring a durable titanium coating, these bits effortlessly penetrate sheet metals, pipes, and thick plastics up to 5mm, making them an indispensable asset for electricians, plumbers, and metal fabricators.

Key Technical Advantages

  • 135° Split Point Tip: Features an aggressive self-centering 135-degree split point that bites into hard metal instantly. It increases cutting speed and ensures the drill does not run off center or "walk" upon contact.
  • Optimized Two-Flute Design: The precision-ground straight twin-flute design guarantees exact hole dimensions, provides significantly longer tool life, and ensures smooth, rapid chip removal during operation.
  • Unmatched Versatility: Perfectly designed for drilling and enlarging multiple holes in thin sections of stainless steel, sheet metals, copper, plexiglass, plastics, and wood (up to a maximum thickness of 5mm).
  • M35 5% Cobalt & Titanium Coated: Manufactured from industrial-grade M35 High-Speed Steel with 5% Cobalt for extreme heat resistance, enhanced by a golden titanium coating to reduce friction and wear.
  • Anti-Slip Tri-Flat Shank: The machined 3-sided flat shank ensures a secure, positive grip in standard drill chucks, eliminating slippage under high torque. (Note: For rotary use only, not for impact).

Technical Specifications

Brand / Manufacturer: Xiaoman Tools (Shanghai, China)
Material: HSS M35 (5% Cobalt)
Surface Finish: Titanium Coated (Gold)
Flute Type: Twin Straight Flute
Tip Angle: 135° Split Point (Self-Centering)
Max Drilling Thickness: Up to 5mm
Operating Mode: Rotary Use Only
Customized Support: OEM & ODM (Laser Logo, Packaging Sets)
HSS M35 5% Cobalt Step Drill Bit 3-Piece Set (4-12/20/32mm) for Stainless Steel Detail 1HSS M35 5% Cobalt Step Drill Bit 3-Piece Set (4-12/20/32mm) for Stainless Steel Detail 2HSS M35 5% Cobalt Step Drill Bit 3-Piece Set (4-12/20/32mm) for Stainless Steel Detail 3