High Quality Solar Hanger Bolt

High quality solar hanger bolt features a dual thread design. One end screws into the roof purlin while the other end passes through the L foot and is secured with a nut. This structure delivers high pull out strength and keeps the mounting rail stable under strong wind.

Made of SUS304 stainless steel, the pv hanger bolt holds up really well against rust even with long‑term outdoor use. Every bolt is paired with an EPDM rubber washer. It creates a firm seal between the fastener and roof sheet to keep rain water out of the building. 

We hold plenty of standard sizes in stock. We can also make custom lengths and special thread specs to fit your project needs. Every bolt gets checked for dimensions and surface quality before packing.

Core Advantages

The dual‑thread design grips purlins really well, so your roof setup stays solid.

Made of SUS304 stainless steel, it resists rust even in harsh outdoor environments and lasts for years.

Paired with an EPDM sealing washer, it stops leaks at roof penetration points for solid waterproof performance.

M8, M10 and M12 standard sizes are in stock, and custom lengths are available for different project needs.

Solar mounting bolt works with most common solar L feet and roof mounting kits.

This solar roof fastener fits wooden purlins, metal purlins and trapezoidal sheet roofs.

Product Specifications

Product Name: Solar Hanger Bolt

Material: SUS304 Stainless Steel

Surface Treatment: Passivation

Available Sizes: M8, M10, M12

Standard Length: 80mm, 100mm, 120mm, 150mm, 200mm

Accessory: EPDM Sealing Washer

Applicable Purlin: Wooden Purlin, Metal Purlin

Application: Rooftop Solar PV Mounting System

Custom Service: OEM, ODM Acceptable

Packing: Carton Box, Pallet

Application Scenarios

Solar roof fastener is widely used in rooftop PV installation where the mounting structure needs to be fixed directly to roof purlins. Common applications include residential pitched roof solar systems, commercial flat roof and metal sheet roof projects, industrial factory rooftop PV arrays, agricultural greenhouse rooftop solar installation, and carport solar projects with purlin based roofing.

Installation Notes

1. Check your purlin material and thickness first when choosing bolt length.

2. If you work on wooden purlins, drill a pilot hole slightly smaller than bolt diameter.

3. Lay the EPDM washer between bolt head and roof surface.

4. Tighten the nut with torque wrench following suggested torque figure.

5. Do not over tighten, which may damage the washer and cause leakage.

FAQ

What is the minimum order quantity?

We accept small trial orders. Standard sizes can be shipped from stock.

Can you produce custom length?

Yes. Please provide the required length, thread specification and quantity for a quotation.

Is the EPDM washer included?

Yes, each hanger bolt is supplied with one EPDM sealing washer.

What is the lead time?

Standard sizes ship within 3 to 5 working days. Custom orders take 10 to 15 working days depending on quantity.

Do you provide samples?

Samples are available. Sample cost is free, buyer covers express freight.