A GI washer, or galvanized iron washer, is a flat fastening hardware component used with bolts, screws, nuts, and other threaded fasteners. This GI washer ordinary type helps distribute load, support fastening pressure, protect surfaces, and improve the fit of selected bolt and nut assemblies.

This GI washer ordinary type may be used for construction, repair, installation, maintenance, furniture assembly, metalwork, equipment repair, and general hardware fastening applications depending on the required size and fit.