dish washer/Plain washer/spring washer/curved washer/wave washer/saw washer (1).Material: Brass, Galvanized, Stainless dish washer/Plain washer/spring washer/curved washer/wave washer/saw washer(1).Material: Brass, Galvanized, Stainless steel210, 304, 316(2).Standard: DIN 934, 439, 6923, 982, 985, 1587, 557, 125, 127, 9021 ANSI/ASME B18.2.2(3).Size: M1.6~M42 (Metric), #8~1"INCH)