Locktab for Allison TCDOA-475

The locktab is a mechanical fastening component that secures threaded elements within the transmission assembly. By bending against the faces of a nut or the surface of a component, it creates a physical barrier that prevents unwanted rotation and ensures the stability of the assembly. This component is designed for use in the Allison TCDOA-475 transmission. The part number for this specific locktab is 274613. It is engineered to maintain the integrity of internal transmission connections, protecting gears and bearings from the consequences of loose fasteners.

Locktabs are used in heavy machinery and commercial vehicle transmissions to maintain the preload of critical bolts and nuts. During operation, transmissions are subject to constant vibrations and dynamic loads that can cause fasteners to back out over time. A locktab provides a simple yet effective method to lock these fasteners in place, ensuring that the internal components remain securely attached throughout the service life of the transmission system.