Solar Fasteners
Fasteners for photovoltaic mounting systems
Carbon steel and stainless steel fasteners for rooftop and ground mount PV installations. Zinc plating (240-480h salt spray), zinc-nickel plating (720-1000+h), and stainless steel options. Thread sizes M6-M16, material grades 8.8/10.9, compliant with ISO 898-1 and ASTM B117.
Application Specifications
Rooftop Mounting Systems
Panel-to-rail connections, rail-to-bracket attachments. Typical loads: 0.5-2.0 kN per fastener. Wind load compliance per local building codes.
Ground Mount PV Installations
Foundation anchor bolts, structural connections. Typical thread sizes: M12-M16. Minimum embedment depth per structural calculations.
Solar Racking Systems
Rail-to-rail connections, end caps, mid-clamps. Standard thread engagement: 1.5-2.0× thread diameter. Torque values per manufacturer specifications.
BIPV Applications
Building-integrated photovoltaic systems. Facade mounting, curtain wall integration. Weather sealing requirements per building envelope standards.
Utility-Scale Solar Farms
Large-scale ground mount installations. Batch traceability required. Typical order quantities: 10,000-100,000+ pieces per project.
Technical Specifications
Environmental Conditions
- •Operating temperature: -40°C to +80°C
- •UV exposure: Continuous outdoor exposure
- •Humidity: Up to 100% RH (coastal applications)
- •Corrosion classification: C3-C5 per ISO 12944
Mechanical Properties
- •Tensile strength: Grade 8.8 (800 MPa), Grade 10.9 (1000 MPa)
- •Yield strength: Grade 8.8 (640 MPa), Grade 10.9 (900 MPa)
- •Thread tolerance: 6g per ISO 965-1
- •Surface roughness: Ra ≤ 3.2 μm
Coating Specifications
- •Zinc plating thickness: 8-15 μm per ISO 4042
- •Zinc-nickel plating thickness: 8-15 μm (10-15% Ni)
- •Passivation: Cr3+ trivalent chromium per RoHS
- •Coating adhesion: Per ISO 2409 (cross-cut test)
Common Solar Fastener Specifications
| Property | Value | Note |
|---|---|---|
| Thread Sizes |
| Custom sizes available |
| Materials |
| Grade 8.8, 10.9 available |
| Surface Treatment |
| Cr3+ passivation standard |
| Salt Spray Resistance |
| ASTM B117 |
| Head Types |
| Per application requirements |
Surface Treatment Options
Surface treatment options per ISO standards. Coating specifications, corrosion classification, and service life data provided per application requirements.
Zinc Plating
Electroplated zinc coating per ISO 4042. Coating thickness: 8-15 μm. Salt spray resistance: 240-480 hours per ASTM B117. Trivalent chromium passivation (Cr3+) per RoHS compliance.
Technical Specifications:
- Coating thickness: 8-15 μm
- Alloy composition: Pure zinc
- Passivation: Cr3+ trivalent chromium
- Corrosion classification: C3 per ISO 12944
Typical Applications:
- Residential rooftop systems (C3 environment)
- Standard ground mount installations
- Indoor/covered installations
Zinc-Nickel Plating
Electroplated zinc-nickel alloy coating. Nickel content: 10-15% by weight. Coating thickness: 8-15 μm. Salt spray resistance: 720-1000+ hours per ASTM B117. Meets automotive standards (IATF 16949 compatible).
Technical Specifications:
- Coating thickness: 8-15 μm
- Alloy composition: 85-90% Zn, 10-15% Ni
- Passivation: Cr3+ trivalent chromium
- Corrosion classification: C4-C5 per ISO 12944
Typical Applications:
- Utility-scale solar farms (C4 environment)
- Coastal installations (C5 environment)
- High-humidity regions
- Long-term warranty requirements
Stainless Steel
Austenitic stainless steel fasteners. Grades: 304 (1.4301) or 316 (1.4401). No coating required. Corrosion resistance per ISO 3506-1. Suitable for C5-M (marine) environments.
Technical Specifications:
- Material grade: 304 (1.4301) or 316 (1.4401)
- Mechanical properties: Per ISO 3506-1
- Corrosion classification: C5-M per ISO 12944
- No coating maintenance required
Typical Applications:
- Marine/coastal environments (C5-M)
- Chemical exposure areas
- 25+ year service life requirements
- Aesthetic applications
Quality & Engineering
Material Traceability
Material certificates (3.1 per EN 10204) available. Batch tracking with heat numbers. Chemical composition reports per ISO 898-1.
- • Mill certificates (3.1) available
- • Heat number traceability
- • Chemical composition per ISO 898-1
Coating Process Control
Coating thickness measurement per ISO 1463 (magnetic method). Salt spray testing per ASTM B117. Process control per ISO 9001:2015.
- • Thickness measurement: ISO 1463
- • Salt spray: ASTM B117
- • Adhesion testing: ISO 2409
Testing & Certification
Third-party testing available. Test reports per ISO/IEC 17025. Certificates provided with shipments.
- • Salt spray: ASTM B117
- • Mechanical properties: ISO 898-1
- • Coating thickness: ISO 1463
OEM / ODM Capability
Custom Specifications
- • Thread specifications: Metric (ISO 965), Imperial (UNC/UNF)
- • Head types: Hex (ISO 4014/4017), Socket (ISO 4762), Flange (ISO 16651)
- • Length tolerance: ±2mm per ISO 4759-1
- • Coating options: Zinc, zinc-nickel, hot-dip galvanizing
- • Material grades: 8.8, 10.9, 12.9 per ISO 898-1
Packaging & Documentation
- • Bulk packaging: Cartons, pallets (per project requirements)
- • Labeling: Barcode (Code 128), QR code, batch numbers
- • Documentation: Material certificates (3.1), test reports, packing lists
- • MOQ: Standard sizes 1,000-5,000 pcs; Custom specs negotiable
Frequently Asked Questions
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