<table border="1" cellspacing="0" cellpadding="8"><tbody><tr><td>Standard</td><td>National-standard</td><td>Compatible Screw Size</td><td>M3,M4,M5,M6</td></tr><tr><td>material</td><td>Red copper</td><td>Type</td><td>gasket,washer</td></tr><tr><td>Surface Treatment</td><td>Intrinsic nature</td><td>application</td><td>marine sealing,telecommunications equipment manufacturing</td></tr><tr><td>style</td><td>round flat</td><td>finish</td><td>Intrinsic nature</td></tr></tbody></table>