M6 x .890 x 4.2mm (.165) Metric Washer Kit by ARP Hardened ARP Special Purpose washers are parallel-ground from premium chromoly. They are available in a variety of sizes and thicknesses for use on virtually any application. Special connecting rod washers are available, as are some of the popular metric sizes. Build up your supply so you don\’t get caught short when the need arises. Features Washer Outside Diameter (in.): 0.890 in. Washer Outside Diameter (mm): 22.606 mm Washer Inside Diameter (in.): 0.236 in. Washer Inside Diameter (mm): 6.000 mm Washer Thickness (in.): 0.165 in. Washer Thickness (mm): 4.191 mm Washer Material: Stainless steel Washer Finish: Natural Inside Diameter Chamfer: Yes Hardened: No Benefits Parallel-ground from premium chromoly Variety of sizes and thicknesses for use on virtually any application Applications Universal What\’s In The Box? 1 – Washer Warranty Manufacturers Standard Warranty