China Stainless Steel Hex Head Bolts M6–M20 | A2-70/A4-80 | High Strength Corrosion-Resistant

FOB Price | 1,000 pieces (Min. Order)
Custom specifications and OEM service available
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Product Description
Stainless steel Hex Head bolts are strong, corrosion-resistant fasteners widely used in construction, solar mounting, and machinery. Our hex head bolts, made in China from A2-70 or A4-80 stainless steel, are available in sizes from M6 to M20, with optional Allen or T-head designs. Designed for securing rails, clamps, and connectors, these stainless bolts offer long-term durability in harsh environments. Matching hex nuts, flange nuts, and wing nuts are also available. As a reliable China stainless bolt supplier, we provide custom stainless steel fasteners tailored to meet your specific application needs.
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Product Specifications
Parameter | Details |
---|---|
Product Name | Stainless Steel Hex Head Bolts |
Material | Premium A2-70 and A4-80 corrosion-resistant stainless steel |
Thread Size | M6 / M8 / M10 (customizable) |
Bolt Type | Hex head, Allen head, and T-head bolts |
Application | Ideal for securing rails, clamps, connectors in solar, construction, and industrial uses |
Matching Nuts | Compatible flange nuts, wing nuts, and hex nuts |
Features | High strength, excellent corrosion resistance, durable locking performance |
Available Sizes | Metric sizes from M6 up to M20, customizable per request |
Applications
Stainless steel bolts, including hex head types, are widely used in solar mounting, construction, and industrial machinery. Their corrosion resistance and strength make them perfect for securing rails, clamps, and connectors in demanding outdoor environments.
PV Racking Systems
Used for fastening clamps, rails, and connectors in solar mounting systems. Ensures secure and reliable connections.
Marine Applications
Ideal for coastal solar installations and offshore renewable energy projects. Provides excellent corrosion resistance.
Industrial Equipment
Used in chemical plants, food processing, and other corrosive environments. Offers long-term durability.
Commercial Solar
Perfect for commercial rooftop and ground-mounted solar installations. Provides reliable fastening solutions.
Residential Solar
Ideal for residential rooftop solar systems. Ensures secure mounting for home installations.
Outdoor Structures
Designed for outdoor applications with exposure to weather elements. Maintains integrity in harsh conditions.

Certifications
Our products meet international quality standards and certifications:
- ISO 9001:2015 Quality Management System
- ISO 14001:2015 Environmental Management
- DIN 934 / ISO 4032 Standards Compliance
- ANSI B18.2.2 American Standards
- Third-party testing and certification

Packaging
Professional packaging solutions for safe transportation:
- 25kg cartons with inner plastic bags
- Custom branded packaging available
- Barcode and QR code labeling
- Moisture-proof and anti-corrosion protection
- Stackable design for efficient storage
Company Introduction
Welcome to Hebei Zixian Fasteners Co., Ltd. – Your Reliable Manufacturer of Galvanized Fasteners and Solar Mounting Accessories from China!
What we offer:
- Full in-house production – from raw materials to packaging
- Solar mid clamps, end clamps, brackets, galvanized bolts & nuts
- ISO-compliant quality control
- Competitive pricing & fast delivery
- OEM & custom fastener solutions for B2B buyers
Contact us today for product catalogs, samples, or quotes:
- Website: zixiansolarparts.com
- Email: xzi675763@gmail.com
- WhatsApp: +86 15630389170
Frequently Asked Questions
1. What industries commonly use stainless steel hex head bolts?
Stainless steel hex head bolts are frequently used in industries like construction, solar mounting, and machinery assembly. Their corrosion resistance and strength make them suitable for outdoor and harsh environments where reliable fastening is essential.
2. Are thread sizes customizable for your stainless steel bolts?
Yes, we provide customizable thread sizes ranging from M6 to M20, with imperial equivalents from 1/4″ to 3/4″. This range helps B2B customers find the right fit for various applications, whether for standard or specialized projects.
3. What types of nuts can be paired with these stainless bolts?
Our stainless bolts are compatible with several types of nuts, including flange nuts, wing nuts, and hex nuts. These matching nuts are designed to work seamlessly with the bolts, ensuring secure and durable connections in various assemblies.
4. How do material grades like A2-70 and A4-80 affect bolt performance?
Material grades indicate the stainless steel’s corrosion resistance and strength. A4-80 offers higher resistance and is ideal for more demanding environments, such as marine or solar mounting applications, while A2-70 suits general industrial uses.
5. What benefits do hex head bolts offer compared to other bolt types?
Hex head bolts provide excellent grip for tightening tools, making installation easier and more secure. Their robust design and corrosion resistance make them a popular choice for securing rails, clamps, and connectors in construction and industrial settings.
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Why Choose Us?
- ✓ 1-on-1 Expert Support – Custom solutions for your specific needs
- ✓ Factory Tours Available – Verify our quality standards in person
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