NiTi shape memory alloy washers Mini Screws:M1.0~M4 x L Other:M4~M64 Min Polishing, Anodizing,Colorful Logo or Images on Item NameNTi Shape Memory alloy washersMaterialNitinol shape memory alloy, Pure Titanium and Alloy TitaniumGradeNi50:Ti50at%, Gr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12, etc.StandardGB,DIN, IFI,UNC,UNC,JIS, BS,BSW ,ISO Mainly SpecificationMini Screw and Nuts: M1.0~M4Usual ...