Product
About The Product
Carriage Bolt
Our Carriage Bolts are designed with a domed head and square neck to prevent rotation during installation, ensuring a secure fit. Commonly used in wood-to-wood or wood-to-metal connections, they are suitable for structural applications where a smooth, tamper-resistant finish is preferred.
Manufactured to DIN and ASTM standards, with various sizes and finishes available to match different installation need
What We Use
Materials We Offer
Mild Steel
- High ductility and malleability
- Suitable for welding and machining
- Commonly used in construction and general fabrication
- Cost-effective option for large-scale projects
- Good tensile strength with moderate corrosion resistance
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
- Natural
Uncoated, for indoor or dry environments
- 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 Carriage Bolt!
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Do you have ready stock for Carriage Bolt?
We keep a selection of commonly requested carriage bolt sizes and grades in stock. For specific or custom specifications, production lead time may apply. 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
