The Light Source Mega 90 Degree Coupler is a specialized angled connector designed to join two sections of pipe at a precise right angle, forming a rigid corner for constructing rectangular or square frames and structures. This coupler is distinguished by its "pinned" construction, where a solid steel pin or bolt passes completely through the coupler body and both pipe sections, providing a mechanically locked connection that is exceptionally resistant to shear forces and rotation. The coupler body is typically constructed from high-strength aluminum with a durable black anodized finish, while the critical pinning hardware is made from corrosion-resistant stainless steel, ensuring long-term durability and strength even in demanding environments. This combination creates a permanent or semi-permanent joint that is ideal for load-bearing applications.

The coupler is engineered to accept 1.5-inch nominal schedule 40 pipe, with an internal diameter matching the standard 1.9-inch outer diameter. The pipe sections are inserted into the orthogonal openings of the coupler and aligned. The stainless steel pin is then driven through pre-drilled holes in the coupler walls and through corresponding holes that must be drilled into the pipe sections themselves, securing the assembly with a nut or cotter pin. This pinned method transcends the holding power of standard set screws, creating a positive mechanical interlock that is virtually impossible to loosen under vibration or dynamic loading. It is a preferred method for building structures where absolute joint integrity is paramount, such as in safety railings, climbing structures, permanent exhibition frameworks, and heavy-duty portable stages.

The black anodized finish provides a sleek, low-profile appearance and surface protection, while the stainless steel hardware offers both visual contrast and assurance against rust. This coupler exemplifies a commitment to maximum structural reliability. Its use requires more preparation than a set-screw coupler, specifically the precise drilling of the pipe, but it yields a connection that is integral to the structure's overall strength. The Mega 90 Degree Pinned Coupler is an essential component for professional fabricators and engineers who design and build pipe structures where safety, longevity, and resistance to mechanical failure are the highest priorities.