Radium Engineering Titanium Lug Bolts, M12x1.5

These fasteners are machined from forged 6AL-4V (Grade 5) Titanium alloy rod. They feature a 60 degree tapered conical seat compatible with most OEM and aftermarket wheels. The threads are rolled, not machined, for superior strength and wear resistance. Grade 5 Titanium has 94% the yield strength of a metric Grade 10.9 steel fastener and is over 43% lighter. Mechanical Properties: Grade 5 6AL-4V Titanium Yield Strength: 890MPa Ultimate Tensile Strength: 952MPa Shear Strength: 550MPa Density: 4428 kg/m^3 Lug Bolt Features: Material: Grade 5 Titanium Threads: Rolled M12x1.5mm *Thread Length: 28mm Taper: 60 Degree Conical Hex Head Size: 17mm *The factory Lotus Elise/Exige/211 uses 22mm or sometimes 25mm. The factory Lotus Evora uses 28mm Length Lug Bolts. The factory BMW M3 uses 25mm Length Lug Bolts. Radium Titanium Lug Bolts are track tested. A non marring 17mm socket is recommended, but not mandatory.