Round Hole Washer designed for secure fastening and load distribution. Key specifications: 11 mm (7/16 in) inside dimension, 20 mm (0.79 in) outside dimension, ideal for various mechanical and structural applications. Additional specs: 2 mm (0.08 in) thickness ensures durability and stability in high-stress environments. Made from high quality general steel for enhanced strength and longevity. Zinc finish provides excellent corrosion resistance and a sleek appearance.