In the installation of modern solar panel mounting systems, selecting durable and reliable fasteners is critical for long-term structural integrity. The T Bolt is a specialized fastener designed for this purpose, typically used to securely attach solar panels to mounting rails. Its unique T-shaped or hammer head design allows it to be easily inserted into the rail’s slot and then rotated 90 degrees to lock into position, creating a strong mechanical connection that resists vibration and environmental stress.
The material composition and finish of this T Bolt directly contribute to its performance and lifespan. It is commonly manufactured from austenitic stainless steel grades, primarily 304 or 316, offering excellent corrosion resistance for long-term outdoor exposure. To further enhance performance, various surface treatments natural finish, wax coating, or nylon patch (for locking) are available. These options help prevent galling during installation and provide additional sealing or vibration resistance, adapting to different installation environments and requirements.
Specifications and dimensions are key to its proper application. This type of T Bolt is offered in standard metric thread sizes, mainly M8 and M10, to match common system specifications. The head size is typically designed to be 23mm in length, 10mm in width, and either 4mm or 4.5mm in height, allowing it to fit precisely into standard aluminum rail slots. Thread lengths vary significantly, ranging from 16mm to 70mm, providing the flexibility needed to accommodate different rail profiles, panel thicknesses, and the use of washers or other hardware.
Installation and function showcase its practical advantages. The primary benefit of using a T Bolt in solar mounting is its speed and simplicity. Installers can slide the T-head into the rail channel and tighten the nut without needing to hold the bolt head in place. This feature greatly improves installation efficiency, reduces labor time, and ensures a consistently secure clamp force. The design allows for some adjustability along the length of the rail during panel positioning before final tightening.
The stainless steel T Bolt is a fundamental, purpose-engineered component for photovoltaic mounting structures. Its corrosion-resistant material, versatile size and finish options, and efficient T-slot locking mechanism make it a reliable and practical choice for securely fastening solar panels. For installers and engineers, understanding the specifications of this T Bolt is essential for ensuring a robust, long-lasting, and safe solar array installation.
Post time: Dec-16-2025