... 4.DIN912/933/7991/7984/6921,ISO7380 ... Item NameTitanium FastenerMaterialPure Titanium and Alloy TitaniumGradeGr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V ... bolts, eye bolts, U bolts, masonry bolts, roofing bolts.Nuts: spring nuts, T nuts, K nuts, rivet nuts, cage nuts, ... nuts, weld nuts, square nuts, cap nuts.Washers: flat washers, spring washers, lock washers, structural Washers. square washer, bowl washer.Screws ...