socket head cap screws

1.Standard:ISO,DIN,ANSI,JIS,BS.
2.Grade:8.8/10.9/12.9
3.Mark:According to customer's requirement
4.Size:M3-M52
5.Finish:Plain, black, zinc plated, H.G.D and so on.
6.Material:carbon steel.
7.Delivery time:Normally in 30-40 days.
8.Quality:Top high quality.
9.Package:Cartons&pallets or according to customer's requirement.