Standard: ASME B18.21.1 1999
1. size: from 2' to 1-1/2
Standard: ASME B18.21.1 1999 spring washers
Surface: HOT GALVANIZED, ZINC PLATING, BLACK OXIDE
We could do all kind of spring wahsers, our spring washers selling very well in many countries, like America, Chile, Brazil and so on.