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Precision Fasteners for Industry & Solar

Jiaxing Haina Fastener Co., Ltd. – ISO-compliant manufacturer of high-strength bolts, nuts, screws, threaded rods, and solar mounting solutions. Trusted by engineers and contractors worldwide.

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About Haina Fastener

Jiaxing Haina Fastener Co., Ltd. was established in 2012 and is a professional fastener sales supplier. Our main products include bolts, nuts, screws, washers, metal stamping parts, and solar accessories, with a complete range to meet the needs of different customers.

Our products are produced in strict accordance with international standards and have obtained relevant certifications, ensuring product quality and safety. We are committed to providing customers with high-quality products and services, and have won the trust and praise of users globally.

  • ISO-Compliant Manufacturing
  • 10+ Years Industry Experience
  • Global Export to 50+ Countries
Stainless Steel Bolts Hex Nuts Threaded Rod Coach Bolts

Why Choose Haina Fastener?

Engineered for strength, precision, and reliability in every application.

Product Diversity

We offer a wide range of high-quality fastener products including bolts, nuts, screws, washers, threaded rods, solar accessories, and metal stamping parts to meet different specifications and industrial needs.

Cost Competitiveness

Thanks to efficient supply chain management and technological innovation, we deliver premium fasteners at competitive prices without compromising on quality or performance.

Full Service Support

We provide one-stop service from pre-consultation and custom design to logistics and after-sale support, ensuring a seamless experience for every client.

Our Product Range

High-performance fasteners engineered for durability and precision across industries.

Stainless Steel Hex Bolt

DIN933 M6-M8 Stainless Steel Hex Bolt

A2/A4-70 grade, full thread, corrosion-resistant. Ideal for marine and outdoor applications.

Material: SS304 / SS316 Bolt
Threaded Rod

DIN975 Full Threaded Rod (M14)

Continuous threading, high tensile strength. Used in structural and mechanical assemblies.

Length: Customizable Rod
Carriage Bolt

DIN603 M8x30mm Carriage Bolt

Round head with square neck, stainless steel. Perfect for wood-to-metal fastening.

Grade: A2-70 Carriage Bolt
Hex Nut

DIN934 Stainless Steel Hex Nut

M4 to M10 sizes, A2-70 grade. Compatible with hex bolts and threaded rods.

Finish: Plain / Zinc Nut
Socket Head Bolt

M3-M8 Hex Socket Head Cap Bolt

A4-70 stainless steel, compact design for tight spaces. High torque resistance.

Standard: DIN912 Allen Bolt
Stud Bolt

DIN976 Stud Bolt (Double End)

Full or partial threading on both ends. Ideal for flange connections and heavy machinery.

Material: Carbon / Stainless Stud
Flange Nut

DIN6923 Hex Flange Nut

Integrated washer prevents loosening. A2-70 stainless steel for vibration resistance.

Sizes: M4 to M20 Flange Nut
Solar Hanger Bolt

M10x250mm Solar Hanger Bolt

Stainless steel with EPDM washer. Designed for solar panel mounting on steel structures.

Includes Nut & Washer Solar Fastener
T-Slot Bolt

A4-70 T-Slot Bolt (M3-M8)

Used with aluminum profiles in industrial framing and solar installations.

Finish: SS316 T Bolt
Self Tapping Screw

SS316 Bi-Metal Self Tapping Screw

With EPDM washer, ideal for roofing and solar panel installations.

Head: Pan / Hex Screw
Foundation Bolt

Heavy Hex Foundation Bolt

Carbon steel with hot-dip galvanized finish. For concrete anchoring and structural use.

Sizes: M12 to M30 Foundation Bolt
Weld Nut

Steel Weld Nut (Hex & Square)

Precision-welded for automotive and industrial fabrication. Carbon steel with anti-rust coating.

Type: Projection Weld Weld Nut
10+
Years in Business
50+
Countries Served
10,000+
Product SKUs
ISO
Certified Quality

Frequently Asked Questions

What materials do you offer for bolts and nuts?

We offer carbon steel, stainless steel (grades A2-70, A4-70, SS304, SS316), and bi-metal options depending on corrosion resistance and strength requirements.

Can you provide custom fasteners?

Yes, we offer OEM and ODM services. Provide your drawings or samples, and we’ll manufacture to your exact specifications including size, thread, head type, and finish.

What standards do your products comply with?

Our products meet DIN, ISO, ANSI, and JIS standards. We follow strict quality control processes and can provide material test certificates upon request.

Do you supply fasteners for solar panel installations?

Yes, we specialize in solar fastening systems including hanger bolts, T-slot nuts, aluminum clamps, grounding screws, and EPDM-sealed self-tapping screws.

What is your minimum order quantity (MOQ)?

MOQ varies by product. For standard items, it can be as low as 1,000 pcs. For custom parts, MOQ depends on complexity. Contact us for details.

Get in Touch

Need a quote, technical support, or custom solution? Reach out to our team directly through the official website.

Visit Official Website

For inquiries, please use the contact form on the official site to ensure a prompt response.

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