Metal Self Drilling Screw with EPDM Washer

Description

Metal self drilling screw with EPDM washer are almost always made out of hard steel or some metal that has been treated to increase its hardness (such as 410 stainless steel). Always make sure when using self drilling screws, the material you drill into is softer than the screw material itself. Otherwise, the screws drilling tip will dull and not cut into the material.