500Pcs Self Tapping Screw 410 Stainless Steel Round Head Industrial Accessories M4.2

1、410 stainless steel has good mechanical properties such as rust resistance corrosion resistance heat resistance and low temperature strength. 2、This self?tapping screw has deep threads uniform pitch stable force and good tightening force. 3、The blade is acute and can penetrate various square tubes color steel tiles and various iron plates with a hardness of about HV300 degrees. 4、This self?drilling screw has a standard cross groove which improves work efficiency and saves time and effort. 5、These stainless steel self?tapping screws have good expressiveness strong and durable.