Ti Hex Flange 1/4-28 x 1.250 Bullet Nose Min. UTS160Ksi. This bolt has 1 1/4" of thread and a 1/4" long bullet nose so that you can start the nut easier. The flange has a diameteter of .380 and it has 1/4" hex. These are made for Kart and Quarter Midget wheel studs.