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Machinery Parts Trading Pins Replacement suitable for Caterpillar® equipment and many other heavy equipment industries. The internal hardness of our new Pins is thicker to ensure better resistance and longer life. They are manufactured with alloy steel, and are put through an induction hardness procedure that makes the pin more resistant to extreme wear and prevents corrosion. Our pins feature: - Induction harden zone HRC 56 min to depth 1mm - Minimum core hardness HRC 22 to 25 - 0.02 to 0.03mm layer of chrome coating on all surfaces of the pin - Material 42CrMo and 35CrMo. At Machinery Parts Trading you are guaranteed to get high quality pins at competitive prices with superior quality.