The Fabco 688F-0464 (also listed as 688F0464) is a genuine OEM 3/8-24 hex flexlock nut designed for heavy-duty truck use. The 3/8-24 thread specification indicates a 3/8-inch diameter with a 24-thread-per-inch fine-pitch pattern, and the flexlock design provides prevailing-torque resistance to help prevent the nut from backing off under vibration. Sourced direct from Fabco, this is the same part number listed. Pro Gear and Transmission sells this as a genuine Fabco part. Call us to confirm proper fit for your application.
Features
Genuine OEM Fabco part number 688F-0464 or 688F0464
3/8-24 fine-pitch thread specification
Hex flexlock design provides prevailing-torque resistance
