Download a pdf version of this data sheet for printing and future reference. (right click and select save to disk) Grade 4340 Hardened and Tempered Bar Size Dia. (Metric) Surface Finish 90 Peeled 106 Peeled 110 Black 120 Black 130 Black 136 Peeled 140 Black 146 Peeled 150 Black 152 Peeled 160 Black 162 Peeled 170 Black 175 Black 180 Black 195 Peeled 200 Black 205 Peeled 210 Black 220 Peeled 230 Black 245 Turned 260 Black 285 Turned 310 Black 335 Turned 360 Black Interlloy believes the information provided is accurate and reliable. However no warranty of accuracy, completeness or reliability is given, nor will any responsibility be taken for errors or omissions.