1. Titanium Wheel Nut, Titanium Rivet, Titanium Fastener 2. Grade: Gr.1, Gr.2, Gr.5, ... Gr.7 3. Custom Products Is Welcome Titanium Screw, Titanium Bolt, ... grade (that is, Grade 2H = Grade 2) except for the higher guaranteed minimum UTS, and may always be certified ... 2H, 7H, 16H, and 26H are intended primarily for pressure vessel use.The H grades were added in response ...