square hole washer

1.Standard:ISO,DIN,ANSI,JIS,BS.
2.Grade:high strength

3.Mark:According to customer's requirement
4.Size: from M6 to M52

5.Finish:Plain, black, zinc plated, H.G.D and so on.
6.Material:carbon steel and stainless steel.
7.Delivery time:Normally in 30-40 days.
8.Quality:Top high quality.
9.Package:Cartons&pallets or according to customer's requirement.