8mm Gi Flat Washer

Diameter: 8 mm; thickness: 1.6 mm; material: hot-dipped galvanized steel for corrosion resistance; pack quantity: 500 pieces per box; packaging is convenient for storage and quick access. It is also noted as being priced by the kilogram for value in bulk projects.

This washer is designed for use with approximately 8 mm diameter bolts, commonly corresponding to M8 bolts. Always verify the bolt shank diameter to ensure a proper fit with the washer’s 8 mm opening.

The 8mm washer is sized for larger fasteners (M8-equivalent), providing greater load distribution for heavier connections. The 6mm GI flat washer is intended for smaller hardware. If you’re working with M6/M6-equivalent bolts, the 6mm variant would be more appropriate. You can view the 6mm option here: https://www.fepy.com/product/gi-flat-washer-6mm

The primary difference is material and corrosion resistance. This washer is hot-dipped galvanized steel, offering good corrosion resistance at a lower cost, suitable for many outdoor and general applications. A stainless steel 8mm washer offers superior corrosion resistance, especially in highly corrosive environments, but at a higher cost. Compare here: https://www.fepy.com/product/stainless-steel-flat-washer-8mm

Common uses include general carpentry, light outdoor constructions, basic plumbing connections, and electrical installations where an 8mm bolt is used. The galvanized coating helps protect against rust in outdoor or semi-exposed environments.

Install the washer between the bolt head (or nut) and the connected surface. Ensure surfaces are clean and flat, place the washer’s flat face against the surface, and tighten to the recommended torque for the bolt size you’re using. Using the correct washer thickness (1.6 mm) helps distribute load evenly and prevents surface marring.

Handle sharp edges with care to avoid cuts. The galvanized coating provides corrosion resistance, but avoid scratching the coating during handling and installation, which could expose bare metal. Store and use as directed to maintain coating integrity and prolong life.

Store in a dry, covered area away from moisture to prevent corrosion. Keep the box closed when not in use to protect from dust and moisture. Inspect periodically for any signs of rust or coating damage, especially after outdoor use.

Yes. The box quantity of 500 pieces provides quick access for bulk projects, and the note that the washer is priced by the kilogram adds value when purchasing in larger quantities. If you’re running multiple builds, this setup minimizes reordering and helps keep costs predictable.

The hot-dipped galvanized steel construction offers solid corrosion resistance for many outdoor tasks and general use. For highly corrosive or marine environments, you might consider stainless steel washers for longer-term protection against corrosion.

Fepy carries a range of GI flat washers in different diameters and thicknesses to suit various bolt sizes and load requirements. For a smaller size, check the 6mm GI flat washer, and for a different material option, you can compare the stainless steel 8mm washer. See related options here: 6mm GI flat washer: https://www.fepy.com/product/gi-flat-washer-6mm; stainless steel 8mm flat washer: https://www.fepy.com/product/stainless-steel-flat-washer-8mm