Outdoor photovoltaic brackets face salt fog, wind vibration and extreme temperature swings year-round. Ordinary carbon steel fasteners easily rust and loosen, threatening solar panel safety. Our 304 stainless steel screws are customized for PV bracket fixation, delivering long-lasting anti-corrosion and anti-vibration performance to match the 25-year service life of solar power systems.
1. Ground & Rooftop PV Station Brackets
Used for cross beams, support columns and module pressing blocks of ground power stations and rooftop distributed solar systems.
Core Requirements
72h salt spray resistance, anti-loose thread, high tensile strength
Matching Product
Pan head standard 304 stainless steel screws with optional nylon locking patch, M5-M10 mainstream sizes
2. Floating Solar & Solar Carport Frames
Suitable for water-surface floating PV and charging station solar canopies with high humidity and seasonal temperature cycles.
Core Requirements
Moisture & salt splash corrosion resistance, easy repeated disassembly
Matching Product
Flange head polished 304 stainless steel screws, integrated flange gasket for higher assembly efficiency
3. PV Auxiliary Accessories Fastening
Mini screws for wire clamps, junction boxes and small pressure blocks
Core Requirements
Precision micro threads, thin low-profile head
Matching Product
Mini pan head small-spec 304 stainless steel screws, M2.5-M4
Core Advantages of PV-Grade 304 Stainless Steel Screws
- Premium SUS304 material resists rain, salt fog and weak acid erosion
- Optional anti-loose coating offsets long-term wind vibration loosening
- Compatible with aluminum and galvanized steel brackets without electrochemical corrosion
- Cut long-term PV station maintenance and fastener replacement costs
Production Specifications
- Material: SUS304 stainless steel, SUS316 optional for coastal high-salt areas
- Thread Sizes: Metric M2.5–M16, customizable non-standard pitches
- Head Types: Pan head, flange head, countersunk head, mini round head
- Surface Finish: Passivation, nylon anti-loose coating, polishing
- Custom Service: Laser marking, customized lengths, OEM packaging
Strict Quality Inspection
- Raw material spectral composition testing
- 100% automatic optical inspection for surface & thread defects
- Torsion, tensile and 72-hour salt spray anti-corrosion tests
- Certifications: ISO9001, RoHS, REACH
28+ years professional stainless steel fastener manufacturer focused on new energy PV hardware. Stable mass production capacity, one-stop PV fastening technical support for global bulk buyers.
304 stainless steel screws are essential durable connecting parts for all solar mounting brackets. Our complete specs and customization services cover ground, rooftop, floating and carport PV projects, supporting trial samples and large bulk orders.
Submit online inquiry to get PV fastening solutions and samples
Post time: Jul-03-2026
