K2 Systems Rail Connector CR 44-X, Set, Mill

The Rail Connector CR 44‑X, Set, Mill (K2 Systems Part No. 4000051) is a structural external splice connector engineered to join two CrossRail 44‑X solar mounting rails securely and reliably in photovoltaic (PV) installations. It attaches externally to the rails and uses two T‑bolts and hex nuts to provide a strong mechanical connection that preserves the integrity of the rail system.

• Model/Type: 4000051
• Finish: Mill
• Included Hardware: 1 × Rail Connector CR 44‑X body + 2 × M10 × T‑Bolts (stainless steel) + 2 × M10 serrated hex flange nuts
• Durable & Certified: Constructed from high‑strength aluminum with stainless steel hardware, providing excellent corrosion resistance and long‑term outdoor performance suitable for residential and commercial solar mounting systems.
• Water Protection & Fit: The connector body is made from aluminum and the fasteners (T‑bolts and nuts) are stainless steel, giving inherent resistance to moisture, rain, and outdoor environmental exposure. Designed for installation on solar PV systems exposed to weather, it withstands typical rooftop moisture, humidity, and occasional water run‑off without degrading performance.