45 Series profile usually applies to assembling the variety of light-weight structural framework, such as instrument rack, display board, engine cover etc. in the machinery industry. Simple and generous appearance is welcomed. It often matches with M6 bolt of hexagon socket head and T-nut. If it needs to bear high strength, please use M6 bolt to connect with the sliding nut so that the framework much stronger and reliable. All 45 series T-slot aluminum extrusion profile can freely connect with each other.