Solar Mounting Spring Washer

Solar Panel Solar Mounting Spring Washer is a important solar mounting accessories used in fastening systems to prevent bolts, nuts,or screws from loosening due to vibration or dynamic loads. Made from SUS304 stainless steel, these washers offer durability and corrosion resistance, making them ideal for solar mounting systems and other outdoor applications.

Most common due to its excellent corrosion resistance, especially in outdoor environments. Typically used with stainless steel bolts and nuts .

Spring washers are often part of a broader hardware kit that may include:

For mounting panels on roofs, RVs, or other surfaces , use Z-Brackets.

End Clamps and Mid Clamps  often including spring washers in their assembly, which used to secure solar panels to mounting rails, .

Adjustable Clamp Kits typically include spring washers alongside other components like bolts, nuts, and flat washers for easy installation

Solar mounting spring washers are ensure the long-term stability and safety of solar panel arrays by maintaining proper clamping force and electrical grounding, which are crucial accessories in photovoltaic (PV) system installations, designed to prevent loosening of bolts and nuts due to vibrations, thermal expansion, and other environmental factors. These washers .

By using together with bolts or screws which two parts are joined together, the thicker of spring washers the more tension power can be offer.

Function and Importance of Spring Washers in Solar Mounting Systems

They prevent bolts and nuts from loosening due to wind-induced vibrations or thermal cycling, which is essential for maintaining the structural integrity of the solar array over time . By applying a continuous spring force, they compensate for material creep, relaxation, or minor shifts in the mounting structure, ensuring that connections remain tight and secure. In some designs, spring washers contribute to effective grounding by maintaining metal-to-metal contact between components, which is crucial for safety and system performance .

split design provides tension when compressed, helping to maintain a tight connection and preventing fasteners from loosening under vibrations or shifting loads. Solar SUS304 Spring Washer available in various sizes (M4, M6, M8, M10, M12), these washers are compatible with a wide range of fasteners, offering flexibility for different applications.

1. Spring Washer Solar can resist loosening of bolts & screws during vibration;

2. Widely used together with hex socket head cap screws for our hi collar lock washers;

3. Good anti-corrosive resistance;

Solar Spring Washer serve multiple critical functions in solar mounting systems:

Spring washers used in solar mounting systems vary based on material and design:

FAQ

Q: What is a solar mounting spring washer?

Spring Washer for Solar Mounting System are kind of very common fasten parts which are also called disc springs / lock springs .The spring washers when be used for solar panel mounting systems, can help offering resistance force after wrench bolts and nut .The helical spring washers usually put under nut / blot / screw head, tighten by spin back tension.

Q: What sizes are common?

A: Sizes match bolt diameters:

M8 (for 8mm bolts), M10 (most common),M12,etc. Always verify dimensions per your racking manufacturer’s specs.

Q: What happens if I omit a washer?

A: Risks include:

Crushed/damaged rails or panel frames.

Loose connections due to vibration/thermal cycling.

Accelerated galvanic corrosion.

Structural failure or panel detachment.

Q: What materials are used?

Stainless Steel (A2/304 or A4/316): Essential for coastal/harsh environments. A4/316 offers superior corrosion resistance.

Q: How Solar SUS304 Spring Washer thickness?

A: Typically 1.5–3mm. Thicker washers handle higher loads but require longer bolts. Follow racking system engineering specs.

Q: Where are solar mounting spring washer used in solar arrays?

A: At every bolted connection:

Rail splices & end clamps.

Panel clamps to rails.

Roof attachments (e.g., L-feet, flashing).

Ground-mount foundations.