Industrial Fasteners
OuSai Seals supplies a complete range of industrial fasteners designed to deliver secure, reliable, and long-lasting performance in demanding applications. As an experienced manufacturer and supplier, we provide both standard and custom fasteners to support mechanical assembly, equipment manufacturing, and industrial systems worldwide.
By combining our expertise in sealing solutions with a growing fastener product line, we help customers achieve better compatibility, improved assembly efficiency, and simplified sourcing from a single, trusted partner.
Our Fastener Product Range
We offer a wide selection of industrial fasteners manufactured to meet international standards and specific customer requirements, including:
-
Bolts – Hex bolts, carriage bolts, flange bolts, and custom designs
-
Nuts – Hex nuts, lock nuts, flange nuts, and special threaded nuts
-
Screws – Machine screws, self-tapping screws, and custom screws
-
Washers – Flat washers, spring washers, and special-purpose washers
Fasteners can be supplied in various materials, sizes, thread types, and surface finishes to suit different operating environments and load conditions.
Materials & Surface Treatments
To ensure durability and performance, OuSai Seals fasteners are available in multiple material options, including:
-
Carbon steel
-
Alloy steel
-
Stainless steel (e.g. SS304, SS316)
-
Other materials upon request
Common surface treatments include zinc plating, black oxide, phosphate coating, and custom finishes, providing corrosion resistance and extended service life in harsh conditions.
Custom Fastener Solutions
In addition to standard products, we specialize in custom industrial fasteners tailored to your drawings or specifications. Our engineering team supports customers throughout the development process, including:
-
Design review and technical consultation
-
Material and coating selection
-
Prototype and sample production
-
Stable mass production and quality control
This flexibility allows us to meet unique performance, dimensional, and application requirements across different industries.
Applications
OuSai Seals fasteners are widely used in a broad range of industries, such as:
-
Automotive and transportation
-
Machinery and equipment manufacturing
-
Power generation and energy systems
-
Hydraulics and fluid systems
-
General industrial and commercial assemblies
When supplied together with sealing products, our fasteners help ensure leak-free, secure, and reliable system performance.
Why Choose OuSai Seals for Fasteners
-
One-stop supply of sealing products and fasteners
-
Consistent quality and stable manufacturing capability
-
Support for both standard and customized solutions
-
Competitive pricing and efficient lead times
-
Responsive technical and customer service
We are committed to helping customers reduce sourcing complexity while maintaining high product reliability and performance.
Contact Us
Whether you require standard fasteners or custom-designed components, OuSai Seals is ready to support your project.
Contact us today to discuss your fastener requirements and discover how our sealing and fastening solutions can add value to your application.