Hex Head Self Drilling Screws for Light Section Steel

This 4.2mm x 13mm hex head self drilling screw is the smallest-diameter option in the range, designed for lighter-duty fixing of roofing sheets to light gauge steel. The slim 4.2mm diameter and compact 13mm length are well suited to thin steel sections and sheet applications where a finer fixing is appropriate. No pre-drilling is required. The hex head with integral washer provides an effective clamping action, and the coarse thread ensures reliable engagement in light section steel. Note that this size is rated to a maximum drill thickness of 2.5mm. Zinc plated for corrosion resistance. Supplied in a pack of 1,000.