... " 3. thread: BSP OR NPT E Type Aluminum camlock coupling(cam and groove quick coupling, camlock, quick coupler) specifications:1. Standard of our cam ... . Specification of our camlock coupling: 1/2"-8"4. Camlock Type: A, B, C, D, DC, DP, E, F5. Body material ... evelope gasket9. Thread of Our Camlock: NPT OR BSP E type aluminum camlock coupling, quick coupling