<table border="1" cellspacing="0" cellpadding="8"><tbody><tr><td>measurement system</td><td>Metric</td><td>material</td><td>Carbon Steel, Stainless steel (304/316), Copper alloy</td></tr><tr><td>Grade</td><td>Class 4.8 & 6.8</td><td>Thread Type</td><td>Coarse Thread</td></tr><tr><td>head style</td><td>Flat</td><td>finish</td><td>Galvanized (color zinc/white zinc/blue zinc), Nickel plated, Blackened, Stainless steel natural color treatment</td></tr></tbody></table>