Drills pilot hole and countersinks for 14 gauge batten screw plus 2 spare pilot drills.
DEMONSTRATION VIDEO CLICK HERE
14g = 6.4mm outside diameter 10= threads per inch = 75mm 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
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