... , ZP, HDG,Plain 3Size: M5-160 4Grade: 8.8,10.9,12.9 Railway fastener torshear high tension ... plain 3. Size: M5-160 and according to customers' requirements4. Grade: 8.8,10.9,12.9 5. Standard:ASTM E1852 ... requirements.6. Payment:L/C,T/T >> Apply to railway, highway, bridge, boiler with steel structure,industry ... railway and now they are being used. We exported to world markets, such as U.S.A., Canada, ...