Product Summary

Longze Solar Panel Mounting Hardware provides the essential structural interface between photovoltaic modules and racking systems. Engineered from high-tensile AL 6005-T5 Aluminum and Stainless Steel 304,

our hardware kits—including Mid Clamps, End Clamps, L-Feet, and Grounding Lugs—ensure a secure, vibration-proof, and corrosion-resistant assembly for 25+ years of outdoor service.

• ✔ Precision Component Engineering: Every clamp and bracket is CNC-machined to ensure a perfect fit with standard module frames (30mm-50mm), preventing localized stress on the glass.
  
  

• ✔ Marine-Grade Materials: Utilizing SUS304 fasteners and 12μm+ Anodized Aluminum, our hardware is built to withstand extreme salt spray, high humidity, and industrial pollutants.
  
  

• ✔ Rapid Installation Design: Pre-assembled kits with DIN 6923 serrated flange nuts significantly reduce field labor, ensuring electrical continuity and structural safety in one step.

• Standards: DIN 6923, ISO 4161, ASME B18.16.4.
  
  

• Material: Aluminum Alloy 6005-T5 / Stainless Steel 304 (A2-70).
  
  

• Surface Finish: Clear Anodized (12μm+) / Electropolished / Hot-Dip Galvanized.
  
  

• Application: Residential Rooftops, Utility-Scale Solar Farms, BIPV Systems.
  
  

Mechanical Properties & Material Hardness

• Certified performance for Solar Mounting Hardware components.

• Hardware Type	Material	Tensile Strength (Rm)	Yield Strength (Rp0.2)	Hardness
  Mid/End Clamps	AL 6005-T5	≥ 260 MPa	≥ 240 MPa	≥ 15 HW
  Hanger Bolts	SUS 304 / 316	≥ 700 MPa	≥ 450 MPa	140-200 HV
  Roof Hooks	SUS 304 / Q235B	≥ 400 MPa	≥ 235 MPa	120-160 HB

Standard Hardware Specifications

• Essential components for Photovoltaic Roof and Ground Racking.

• Component Name	Standard Sizes	Adjustment Range	Compatibility	Salt Spray Test
  End Clamps	30, 35, 40 mm	Fixed / Adjustable	Framed Modules	1000+ Hours
  Mid Clamps	Universal	30 - 50 mm	Framed Modules	1000+ Hours
  L-Feet Kit	M10 x 25 mm	Slotted Hole	Metal Roofs	1000+ Hours
  Grounding Clip	Standard	N/A	Electrical Bonding	800+ Hours

Surface Treatment & Environment Testing

• Ensuring 25-year structural integrity for Mounting Hardware.

• Coating Type	Process	Thickness / Test	Best Application
  Clear Anodized	Electrolytic	12μm - 15μm	Standard Racking
  Electropolished	Chemical	Satin Finish	Coastal / Marine
  Hot-Dip Galv.	Molten Zinc	65μm+ (Steel)	Ground Mount Piles

Avoid Pitfalls:

• Dissimilar Metal Corrosion: Never use standard zinc-plated carbon steel bolts with aluminum clamps. This creates a galvanic cell that destroys the hardware. Always use Stainless Steel 304 fasteners for aluminum components.
  
  

• Under-torqueing Clamps: Loose clamps can lead to module "fly-off" during wind storms. Always use a torque wrench set to the manufacturer's spec (typically 12-15 N.m for mid-clamps).
  
  

• Incorrect Module Depth: Ensure your End Clamps match the module frame thickness (e.g., 35mm clamp for 35mm frame). Using an oversized clamp leads to insufficient clamping force and module vibration.
  
  

Perfect Fit Assembly:

• Serrated Nut Locking: Our hardware utilizes DIN 6923 Serrated Flange Nuts to "bite" into the anodized surface, ensuring the assembly remains tight despite thermal expansion and contraction.
  
  

• Grounding Integration: Use specialized grounding pins or washers with your mounting hardware to pierce the anodized layer and ensure the entire array is safely bonded for lightning protection.
  
  

Quality Control & Logistics:

• ISO 9001 Certified: 5-step QC including Anodizing Thickness Verification, Salt Spray Testing, and Thread Go/No-Go Gauge verification.
  
  

• Global Shipping: Kitted packaging available (bolts, nuts, and clamps pre-assembled). Optimized for export from our Yongnian high-strength fastener hub.

Q: Can you provide black hardware for aesthetic residential roofs? A: Yes, we offer Black Anodized hardware that provides the same 12μm+ protection with a premium matte finish.

Q: Do you offer hardware for frameless modules? A: Absolutely. We manufacture specialized EPDM-lined clamps designed to secure frameless glass modules without causing micro-cracks.