12mm Flat Round Galvanized Washer is used under bolt and coach screw heads to spread load and prevent the fastener from pulling through timber or damaging the surface it’s fixed to. The galvanised coating provides corrosion resistance for outdoor and treated-timber applications.
A standard component in most structural bolting and coach screw fixings — keep a supply on hand alongside your bolts and screws for any framing or post installation job.






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