Hex Head 5.5 x 25mm
Will self-drill through sheet metal, eradicating the need for
drilling pilot holes, or using regular self-tapping screws.
They are perfect for numerous applications, including:
Sheet Steel, Fixing to conduit, Fixing to trunking
Replacing roofing bolt and nuts.
Use with DS HXTDA - Drill Screw - Hex Head Adaptor