... : 1/2"-6" 3. Thread: BSP OR NPT E Type Aluminum camlock coupling(cam and groove quick coupling, camlock, quick ... made to standard2. Casting method of our camlock coupling: gravity casting3. Specification of our camlock coupling: 1/2"-8" ... 4. Camlock Type: A, B, C, D, DC, DP, E, F5. ... . Thread of Our Camlock: NPT OR BSP E Type aluminum camlock coupling