Terex
Hex jam nut for Terex BT4792
This hex jam nut is a fastening component used in the boom assembly of the Terex BT4792 crane. It features a 7/8-14-2B thread specification to ensure precise fitment.
Parts diagram
Compatible models
Specifications
- Part number
- 221-18003
- Brand
- Terex
The 221-18003 hex jam nut serves as a fastening component within the boom assembly of the Terex BT4792 crane. It is designed to provide secure retention for threaded connections, helping to maintain the structural integrity of the boom sections during operation. The component is manufactured to meet specific thread requirements for compatibility with corresponding bolts in the assembly.
This nut is specified as a 7/8-14-2B size, indicating a 7/8 inch diameter with 14 threads per inch and a 2B thread fit class. It is designed for use with standard hexagonal tools for installation and tightening. The component is finished with a plating treatment to assist in environmental protection.
In heavy machinery, jam nuts function as locking devices. They are typically tightened against a primary nut to prevent loosening caused by vibration or dynamic loads. By locking the threads, they ensure that the connection remains at the intended tension, which is necessary for the safe operation of mechanical linkages and structural assemblies.