Thread iso228 g1 2 July 8, 2019 16 32 64 128 Thread iso228 g1/2 en 837 316l Thread iso 228 g1/2 en 837 Thread iso228 g1 2 hole 11.4 mm 316l Thread iso228 g1 2 en 837 Thread iso228 g1 2 en 837 316l Thread iso228 g1 2 316l Iso 228/1 thread dimensions Iso 228 thread Thread g28 Thread g1/8 Thread g1-11