Allen head socket screw is used with mid clamps, end clamps, T nuts, flat washers, and spring washers in PV rail systems. The cylindrical socket head lets the installer tighten the clamp from the top of the module row. The advantage is set matching: M8 length can be selected by clamp height and rail slot depth, so the T nut can rotate and lock without bottoming out in the rail.
Product Parameters
|
Parameter |
Specification |
|
Material |
304 stainless steel; 316 stainless steel for higher corrosion resistance |
|
Strength Basis |
Stainless fastener class by order |
|
Thread Diameter |
M8 common for PV clamp sets |
|
Length |
M8×25, M8×30, M8×35, M8×40 |
|
Head Type |
Cylindrical socket head |
|
Surface Treatment |
Plain stainless or passivated stainless |
|
Set Components |
Socket screw, T nut, flat washer, spring washer |
Product Advantages
1) Allen head socket screw works with an internal hex drive, so clamp tightening can be done in the narrow space between PV module frames.
2) M8×30 is often used as a common length for mid clamps, while M8×35 or M8×40 can fit higher clamps or thicker rails.
3) 304 stainless steel fasteners match aluminum rails and clamps in many roof and ground PV systems.
Main Applications
Used for PV mid clamp sets, end clamp sets, aluminum rail systems, and solar module fastening kits.
Suitable for rooftop and ground PV projects that use M8 T nuts.
Quality Control
Thread fit, socket depth, head diameter, length, and stainless surface are checked before packing.
Bolts are packed with T nuts and washers when the buyer orders complete clamp sets.
Packaging and Transport
Small parts are packed by set or by size label. Long sections are bundled with end protection and pallet marks.
When a shipment includes several close sizes, labels show diameter, length, thickness, or section code.
FAQ
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