Karunia Utama
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Product

About The Product

Washer

A washer is a flat, disc-shaped component used to distribute load, prevent loosening, and reduce wear in fastener assemblies. Available in plain, spring, and lock styles, washers ensure stable and secure connections.


 

Manufactured in compliance with ISO and DIN standards, our washers offer reliable performance. Custom sizes and specifications are also available to meet your project needs.

What We Use

Materials We Offer

Carbon Steel

  • High tensile strength and durability
  • Cost-effective material for general applications
  • Suitable for indoor or controlled environments
  • Easily machined and welded
  • Can be coated or treated for improved corrosion resistance

Stainless Steel

  • Exceptional resistance to corrosion and staining
  • Ideal for hygienic or corrosive environments
  • Widely used in food processing, pharmaceuticals, and marine applications
  • Retains a clean, polished look over time
  • Requires minimal maintenance in harsh conditions

Global Certifications

Standards We Comply With

Our Coating Options

Surface Treatments and Finishes

  • Black Finish
    Corrosion protection for outdoor use

 

  • Hot-dip Galvanized
    Superior corrosion protection for outdoor use

 

  • Zinc Plated Galvanized (White & Yellow)
    Electro-galvanized for moderate corrosion resistance

Tailored Solutions

Why Karunia Utama

Custom Dimensions

Lengths, diameters, and thread pitches as per specifications

Special Materials

Alternative steel grades and alloys

Testing Procedures

Tensile and hardness testing, Chemical composition analysis, Non-destructive testing (NDT)

Certifications Provided

Material Test Reports (MTR)
Certificates of Compliance, Third-party inspection reports upon request

Project Highlights

A Closer Look at Span Screws

Secure Your Foundation with Reliable Span Screws!

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We've Got You Covered

Do you have ready stock for Span Screw?

We carry select sizes and specifications of Span Screws for common applications. For special materials or custom configurations, lead time may be required. Feel free to contact us to check current availability.

Yes, we provide certifications upon request, including the Certificate of Origin (COO), Certificate of Conformity (COC), and Mill Certificate for material traceability

Samples can be provided upon request, especially for custom specifications or new materials