Washer Our products including bolts nuts screws washers etc. 90% are exported directly. The specifications of products as follows: Diameter: m3-m76; length: 10mm-2000mm; standard: iso, din, bs, anse/asme, jis, astm, gb Grade: 4.6, 4.8, 6.8, 8.8, 10.9, 12.9
