Hiro Seiko 69253 3mm Alloy Countersunk Washer (Black 10 pcs) $6.95 / Tax included. Default Title Default Title Add to Cart Your Email Send This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Hiro Seiko Aluminum 7075 3mm Countersunk Washers (Black - 10 pcs)