1 Standard: DIN, BS, IFI, JIS, ISO,GB,ANSI,ASME,Non-Standard
2 Size: M3–M76
3 Material:
1) Carbon Steel
2) Alloy Steel
3) Stainless Steel
4) Brass
5) Aluminum
etc.
4 Finish:
1) Zinc Clear
2) Zinc Yellow
3) Black
4) Nickel-plating
5) Tin-plating
6) Chrome- plating
7) Dacromet
8) Mechanical Galvanizing
9) Hot-dip Galvanizing
5 Type
1) Spring washers
2) Flat washers(plain washer,IFI,ASTM)
3) Lock washers
4) Star washers
5) Square washers
6) According to your request
zinc plated flat washer