... ,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12 3>Standard:GB,DIN, IFI,UNC,UNC, 1>Certificate:ISO 9001:20082 ... >Dimensions: M2-24 or according to your requirements3>Standard:DIN912,DIN931,DIN934,DIN7991,DIN9654>Washer sizes:M4-M165>Grade ... :bicycle,motorcycle,car,especially racing bicycle,racing car,racing motorcycle. machine screw