KeyThis key is an aftermarket replacement retention element used to lock a gear, pulley, or hub onto a shaft against rotation under operating torque. Service techs replace keys during overhauls when wear, shear damage, or removal damage prevents reuse. A failed key allows the mating component to spin on the shaft and damages both surfaces, requiring repair beyond a simple key replacement. Sold as an aftermarket replacement, contact us to verify dimensions and material grade against your application before ordering, since visually similar keys vary in actual length, width, and height, and substituting between sizes leaves a slack joint that fails under operating torque cycles.Aftermarket replacement part, cross-references original part number AC04010-00519.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC04010-00519, ac04010-00519, AC0401000519, ac0401000519 ⚠ 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.
