Often referred to as polytop nails and pins, our A4 Stainless steel plastic headed nails and pins are made from marine grade stainless steel to ensure that they will not rust over time.Cheap inferior fixings can save a few pounds on a roofline installation but they will cause no end of problems - including structural failure and unsightly staining of the PVC fascia system. We heartily recommend that you should not be tempted to take the risk, as rectification of such problems is a complicated and costly process.65mm plastic headed nail are generally used for installing replacement fascia boards. 50mm nails should be used to fix cover boards in place, whilst 40mm and sometimes 30mm pins are used for fixing soffits.