TOLL FREE 1-888-869-2424 Material: grey cast iron, phosphatized, ground Cat. No. b h d1 d2 Number of threads g 15204 37 140 12 M 12 4 1700 15205 37 200 12 M 12 6 2400 16216 66 140 16 M 16 4 2900 16217 66 200 16 M 16 6 3600