Plain washer/spring washer/curved washer/wave washer/saw washer/dish washer Material: Brass, Galvanized, Stainless steel21 Plain washer/spring washer/curved washer/wave washer/saw washer/dish washerMaterial: Brass, Galvanized, Stainless steel210, 304, 316Standard: DIN 934, 439, 6923, 982, 985, 1587, 557, 125, 127, 9021ANSI/ASME B18.2.2Size: M1.6~M42 (Metric), #8~1"INCH)