... : Titanium Fastener2.Material: Pure Titanium and Alloy Titanium3.Grade: Gr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12, etc.4.Standard: GB,DIN ... , IFI,UNC,UNC,JIS, BS,BSW ,ISO5.Specification: Bolt: M4-M64*L6—300mm Nut: M4-M64 Washer: M4-M646 ... .Finish: Polishing, Anodizing, Black oxide7.Features: light weight, acid and alkali resistance, anti-corrosion ...