LITTLE KNOWN FACTS ABOUT TYPES OF SCREW HEADS.

Flanged head screws come in many different layouts. What makes the flange head screw diverse would be the flange that lies straight beneath the screw head. Think of the flange as an built-in washer. The flange distributes the burden of the fabric about a wider location than the exact same screw style sans washer. Spanner screws aspect two holes or