12x160 sds concrete bit

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10 Gauge x 50mm Stainless Steel Square Drive Decking Screw 304 Stainless

Use number 2 square driver bit

 

14g = 6.4mm outside diameter 10= threads per inch = 100mm over all length.Galvanised Batten Screws, for fastening heavy timbers where corrosion resistance is required, popular in external environments and treated pine.CLICK IMAGE TO SEE QUANTITY PRICE BREAKS

sd Nyloc stainless steel