Hot Rods Crank Pin - 24 x 74

This Hot Rods crank pin is 24mm in diameter and 74mm long. It's made from hot-rolled ASTM 4115 steel, which is a strong material often used for high-stress components. After forming, it's case-hardened to a hardness of 58-62 on the Rockwell C scale. This process makes the outer surface very hard, which helps it resist wear and abrasion, while the inner core remains tougher and more shock-absorbent. This combination is important for a part that connects major rotating components in an engine.

The use of ASTM 4115 steel and the case-hardening process are intended to create a well-built pin that can handle the demands of engine operation. This type of pin is a common replacement part for engine rebuilds where the crankshaft is being serviced.