The Fabco 688F-0739 (also listed as 688F0739) is a TN10 self-locking nut featuring Dri-Loc #201 thread-locking treatment. Dri-Loc is a dry, pre-applied thread-locking compound that eliminates the need for liquid adhesive at installation, providing consistent clamp load and resistance to loosening under vibration. This is a genuine OEM Fabco fastener designed for use in Fabco drivetrain and transfer case applications. Sourcing OEM hardware ensures the correct thread form, locking torque, and material spec for the assembly it came from. Available from Pro Gear and Transmission. Call us to confirm this fastener fits your specific Fabco application before ordering.
Features
Genuine OEM Fabco part number 688F-0739 or 688F0739
TN10 self-locking nut design
Dri-Loc #201 pre-applied dry thread-locking compound
Eliminates need for liquid thread-locker at installation
Resists loosening under vibration in heavy-duty drivetrain applications
