... to 6'' Thread: NPT , BSP Stainless Steel Camlock Coupling Type-F( Male Adapter X Male Thread )Size: 1/2'' , 3/4 ... 4", 6",8''Thread: NPT , BSPStainless Steel Camlock Coupling ( Type-F )< Technicial Standred of the product is according to the American ... -A-59326A( superseding MIL-C-27487), They are used usual industrial field including Military, Oil, Colliery, Fire control ,Chemical, Industry , ...