Terex
Hex jam nut for Terex BT4792
This hex jam nut is a fastening component designed for the Terex BT4792 crane. It features a 3/8-16 thread specification and a zinc finish.
Parts diagram
Compatible models
Specifications
- Part number
- 221-00031-3
- Brand
- Terex
The 221-00031-3 hex jam nut serves as a specialized fastening element within the Terex BT4792 crane assembly. This component is engineered to be tightened against a standard nut or a mounting surface to lock the assembly in position. By creating tension between the threads, it prevents the loosening of connections that may occur during the operation of heavy machinery.
This part is compatible with the Terex BT4792 model. It is manufactured to a 3/8-16 thread specification, indicating a 3/8-inch diameter with 16 threads per inch. The component features a zinc coating to assist in corrosion resistance. Proper installation ensures that the threaded connection remains secure under the dynamic loads and operational conditions typical of crane equipment.
In mechanical systems, jam nuts are used to secure settings on threaded rods, linkages, or adjustment bolts. By locking the primary nut or adjustment mechanism in place, the jam nut maintains the intended calibration of the assembly and prevents movement caused by vibration.

