3863778 New Industrial Boom Pin Assembly Fits Caterpillar Fits CAT 428E 434E 432

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One New Aftermarket Replacement Pin Assembly Fits Caterpillar Boom Models: 428E, 434E, 432E The internal hardness of the new CTP Pins is thicker to ensure better resistance and lon ger 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:3 Induction harden zone HRC 56 min to depth 1mm3 Minimum core hardness HRC 22 to 253 0.02 to 0.03mm layer of chrome coating on all surfaces of the pin3 Material 42CrMo and 35CrMo Replaces Part Numbers: 3863778, BUN90-002 Show more