A screw is a type of hardware fastener that attributes its mechanical capabilities to the helical groove that extends around the circumference of the device's shank. These threads provide the friction ...

The most common type of this fastener has a built-in ... the built-in washer does that for you. A sheetmetal screw has sharp threads and a reasonably sharp tip that cuts into the material into ...

Shoulder screws are a type of machine screw with integral threads that are only present on half or less of the screw shank. A shoulder screw has a partially smooth shaft that will allow the bolted ...