Castle NutThis aftermarket castle nut is the slotted retainer used on forklift steering knuckles, kingpins, tie rod ends, and wheel spindles where a cotter pin locks the fastener in place. It is a wear-replaceable item that gets cut off during axle service or steer cylinder rebuilds and rarely reused. Independent forklift mechanics and rental fleet shops buy these by the handful when rebuilding front ends across mixed-OEM fleets. Sold as a crossover replacement, not OEM. Contact us to confirm thread size, height, and slot count match your application before ordering, especially on older Class IV and V trucks.Aftermarket replacement part, cross-references original part number AC01593-02013.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC01593-02013, ac01593-02013, AC0159302013, ac0159302013 ⚠ Warning: Some equipment has serial-number breaks that may not be reflected in the catalog. Contact us for clarification before ordering if uncertain.SCR Forklift Parts ships from Whittier, CA with next-day delivery available across the US when needed.
