Terex
Locknut for Terex BT4792
This 10-32 NF locknut with a nylon insert is designed for the throttle installation assembly on the Terex BT4792 crane. It provides a secure connection for electrical control components.
Parts diagram
Compatible models
Specifications
- Part number
- 221-90003
- Brand
- Terex
The 221-90003 locknut serves as a fastening component within the throttle installation assembly of the Terex BT4792 crane. It features a 10-32 National Fine thread specification and includes a nylon insert designed to maintain tension on the bolt threads, which prevents the nut from loosening under operational vibration. The component is finished with a zinc coating.
This part is compatible with the Terex BT4792 model. It is specifically engineered to secure electrical control hardware, ensuring that throttle system connections remain in place during machine operation.
Locknuts of this type are used throughout heavy machinery to maintain the integrity of bolted joints in systems subject to dynamic loads. The nylon insert creates a prevailing torque that resists backing off, while the fine thread pitch allows for precise adjustment and tightening of the assembly.

