SQUARE WASHER GALVANISED METRIC

Galvanised square washers are heavy-duty flat plates designed to distribute clamping force over a larger surface area than standard round washers. Primarily used in timber and structural steel construction, their Hot-Dip Galvanised (HDG) coating provides excellent long-term protection against rust in outdoor and marine environments. 

Key Functions and Usage
Load Distribution: Their wider and thicker profile spreads loads more evenly, which is essential when fastening into soft materials like timber to prevent the nut from pulling through or deforming the surface.
Anti-Rotation: When placed within a square recess, the square shape prevents the washer from rotating during assembly.
Irregular Holes: These washers are particularly effective for covering oversized or irregular-shaped holes, providing a smooth, stable base for the nut to press against.