... : 1/2"-6" 3. thread: BSP OR NPT E Type Aluminum camlock coupling(cam and groove quick coupling, camlock, ... coupling: 1/2"-8"4. Camlock Type: A, B, C, D, DC, DP, E, F5. Body material: Aluminum A356 ... steel plated rings and safety clips (the safety clip is optional part of our camlock couplings)8. Sealing Material ... . Thread of Our Camlock: NPT OR BSP E type aluminum camlock coupling, quick coupling