What are polymer headed pins?
They are A4 stainless steel pins with a small, colour-matched plastic head (6.4mm). The head hides the fixing against coated trims and beading, and the stainless shank resists corrosion outdoors. Think of them as the finer, light-duty version of polymer headed nails.
What is the difference between polymer headed pins and nails?
Same A4 stainless shank and UV-stable coloured head, but pins are finer: a 2.1mm shank and a 6.4mm head, against 3.2mm and 12mm on the nails. Use pins for thin trims and beading, and nails for fixing the fascia and soffit boards themselves.
Can I use them outdoors or near the coast?
Yes. The A4 (316) stainless steel gives a corrosion rating of 5, the top of the scale, which covers coastal and industrial air with salt in it.
What size polymer headed pin do I need?
30mm covers most trim and beading, with 40mm for a firmer hold in thicker sections and 25mm for the lightest detail. All run on a 2.1mm shank with a 6.4mm head.
Will they mark oak or cedar?
No. Standard pins react with the tannins in oak and cedar and leave dark marks. The stainless shank avoids that, so the timber stays clean.