Multi-Functional Step-Point Metal Twist Drill Bit

Manufacturing Standard: DIN 338 (Jobber Length)
Point Angle: Dual-Action Stepped Point (Self-Centering)
Material:HSS-G (M2): Best for general-purpose steel, iron, and aluminum.
HSS-Co (M35 Cobalt 5%): Recommended for high-tensile materials and stainless steel (SUS304/316).
Surface Finish: Amber / Polished / Titanium (TiN) Coated.
Application: Suitable for hand-held drills and stationary drill presses.
Hardness: HRC 63-66 (M2) / HRC 66-68 (M35).

Why Choose Us ?

  • Reliable Manufacturing Experience
  • Strict Quality Control
  • Flexible Customization & Support

Industrial Multi-Functional Step-Point Twist Drill Bit – High-Performance Metal Boring Solution

The Evolution of Metal Drilling: One Bit, Zero Pilot Holes

Upgrade your industrial tool catalog with our Industrial-Grade Step-Point Twist Drill Bits. Engineered with a revolutionary multi-stage “Pagoda-style” tip, these bits combine the precision of a step drill with the deep-reaching capability of a standard twist drill. Designed specifically for high-efficiency metalwork, they eliminate the need for center punching or pilot holes, significantly reducing operation time for professional fabricators.


Core Innovation: The Step-Point Geometry

Unlike traditional 118° or 135° split points, our Stepped Tip design features multiple graduated cutting edges at the point. This provides:

  1. Instant Self-Centering: The “tip-within-a-tip” prevents walking on smooth metal surfaces.

  2. Multistage Cutting: The steps act as mini-cutters that gradually enlarge the hole, reducing torque requirements and preventing bit breakage.

  3. Built-in Deburring: The stepped shoulder automatically smooths the hole entry as it drills, leaving a clean, professional finish.


Features

  • Optimized for Tough Metals: Premium High-Speed Steel (HSS/HSS-Co) construction makes these bits ideal for Stainless Steel, Alloy Steel, Cast Iron, and Aluminum.

  • Rapid Chip Evacuation: High-volume parabolic flutes ensure fast removal of metal shavings, preventing heat buildup and extending tool life in high-speed CNC or manual operations.

  • 3-Flat / Round Shank Design: Depending on the model, the shank is engineered to prevent slipping in the chuck, ensuring maximum power transfer.

  • Extreme Durability: Heat-treated to HRC 63-66 for superior wear resistance, reducing the “Cost Per Hole” for large-scale manufacturing projects.

Product Specifications: Industrial Step-Point Twist Drill Bits

Diameter (mm) Flute Length (mm) Total Length (mm) Shank Type Material Options
1.0 12 34 Straight Round HSS / HSS-Co M35
2.0 24 49 Straight Round HSS / HSS-Co M35
3.0 33 61 Straight Round HSS / HSS-Co M35
4.0 43 75 Straight Round HSS / HSS-Co M35
5.0 52 86 Straight Round HSS / HSS-Co M35
6.0 57 93 Straight Round / 3-Flat HSS / HSS-Co M35
7.0 69 109 Straight Round / 3-Flat HSS / HSS-Co M35
8.0 75 117 Straight Round / 3-Flat HSS / HSS-Co M35
9.0 81 125 Straight Round / 3-Flat HSS / HSS-Co M35
10.0 87 133 Straight Round / 3-Flat HSS / HSS-Co M35
11.0 94 142 Straight Round / 3-Flat HSS / HSS-Co M35
12.0 101 151 Straight Round / 3-Flat HSS / HSS-Co M35
13.0 101 151 Straight Round / 3-Flat HSS / HSS-Co M35

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