8g - 18 x 30mm - 1000pc Countersunk Head Coarse Self Drilling Screws Galvanised

Galvanised Countersunk Course Metal Drilling Screws have a hardened self drilling point which cuts through mild steel without the need for pre-drilling. However for thick or hardened steel pre-drilling may be required. The self embedding nibs on the head help to penetrate when countersinking. The galvanised coating is suitable for most outdoor applications.