Service of Rainbow Hardware

We are fasteners specialist that produce customized and specialized fasteners.

Integrated Manufacturing Services

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Available Machineries 

  • Multi-Stroke Heading Machines
    • 1 Die 2 Blow
    • 2 Die 2 Blow 
    • 2 Die 4 Blow 
    • 3 Die 3 Blow
    • 4 Die 4 Blow
    • 6 Die 6 Blow
  • Thread Forming Rolling Machines
  • Centre Lathe
  • Bench Lathe
  • Automatic Lathe (Cam, fixed head , sliding head )
  • CNC Lathe Processing Machines (fixed head , sliding head )

Vertical Lathe -

Vertical lathe spindle is mounted vertically, bed sets the horizontal direction, the workpiece placed on a rotatable platform bed. Particularly suitable for processing large diameter, but shorter length of the workpiece.

Turret lathe -

Particularly suitable for processing of drilling, reaming and boring. Suitable for moderate to large number of parts, suitable for mass production.

Automatic lathes 

Machining and turning automatically according to the work order. At completion, the system automatically retract, feed, and proceed to the next turning. Suitable for mass production of a smaller diameter workpiece.

Cam lathe

Also known as Copying Lathe; it uses contact pins shape according to the model or, turning moves with turning work piece, so it can correctly model the same as the turning workpiece.


  • Stamping Press Machines 
  • Various Secondary Processing Machines – 
    • Polishing 
    • Milling 
    • Slotting / Grooving
    • Drilling
    • Tapping
    • Thread Forming 
    • Welding

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Available Materials:

  • Cold Forging Carbon Steel 
    • Low Carbon Steel - C1008, 1010, 1012, 1020, 1022, 1025
    • Mid Carbon Steel – C1035, 1040, 1045
    • High Carbon Steel – C1060, 1070
  • Boron Steel – 10B21, 10B22, 10B33
  • Stainless Steel - SUS 301, 302, 303, 304, 316, 410, 430, 420, 440 
  • Alloy Steel – Zinc Alloy Steel, Spring Steel, Bearing Steel  
  • Aluminum Alloy
  • Brass
  • Bronze
  • Copper
  • Titanium Alloy 
  • Nylon 
  • Plastic

Available Surface Finish Treatments, Electro-plating and Coating Services:

  • Heat Treatment
  • Hexavalent Zinc Plating Cr6+ (White, Black, Yellow)
  • Trivalent Zinc Plating Cr3+ (White, Black, Yellow)
  • Black Oxide
  • Black Zinc Plating 
  • Black Phosphate
  • Nickel Plating
  • Chrome Plating
  • Tin Plating
  • Dacromet Coating
  • Geomet Coating
  • Ruspert Coating

Contact Us

Justin Tsao

+886-2-2983-7266

+886-975-859-958

+886-2-2987-4797

rainbow-go

[email protected]

No. 35, Renzhong St, Sanzhong District, New Taipei, Taiwan 24151