... ,union,spring 2)Carbon Steel ,Aluminium, Brass, SS. rubber 3)OEM fitting for hose,tube Material: Carbon Steel ,Aluminium, Brass, SS. rubberSurface ... .Imperial: 3/8X24, 7/16X24, 7/16X20, 5/8X18 etcStylesMale fitting, female fitting, banjo, nut, boltMaking technicsRivet; welding joint; wedge; cold heading ...