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
Secure Your Foundation with Reliable Span Screws!
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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.
Do you provide product certifications?
Yes, we provide certifications upon request, including the Certificate of Origin (COO), Certificate of Conformity (COC), and Mill Certificate for material traceability
Can I get a sample before placing a bulk order?
Samples can be provided upon request, especially for custom specifications or new materials
