Terex
Hex nut top lock for Terex BT4792
This hex nut top lock features a 5/16NC thread and is designed for the boom assembly on the Terex BT4792 crane. It utilizes an integrated locking mechanism to maintain secure fastening under dynamic loads.
Parts diagram
Compatible models
Specifications
- Part number
- 221-91002
- Brand
- Terex
The 221-91002 hex nut top lock is a specialized fastener engineered for use within the boom assembly of the Terex BT4792 crane. This component features a 5/16NC thread specification and incorporates a top-locking mechanism designed to resist loosening caused by the vibrations and dynamic stresses common in crane operations. By providing consistent tension, this nut ensures that the structural connections within the boom remain secure during operation.
This fastener is compatible with the Terex BT4792 model and is used specifically in the 92-foot boom assembly configuration. It serves as a critical component for maintaining the mechanical integrity of the boom structure by preventing the backing off of threaded connections under load.
In heavy machinery, a top-lock nut acts as a locking fastener that prevents rotation when subjected to external forces. These nuts are commonly employed in structural assemblies where vibration is present, ensuring that the bolt remains seated and the joint maintains its intended torque value over time.