Fabco locknut 688-0292 or 6880292 is a 5/8-18 UNJF-3B, 8-point high-tensile hex locknut listed in Fabco's own illustrated parts manuals for the TC-142-PD and TC-170 transfer case models. The 5/8-18 UNJF-3B thread designation indicates a unified national fine thread, Class 3B internal fit, engineered for close-tolerance fastener applications in Fabco transfer case assemblies. Both part number forms, 688-0292 and 6880292, refer to the same component. Pro Gear and Transmission carries genuine Fabco drivetrain hardware. Call us to confirm proper fit for your specific unit.
Features
Fabco part number 688-0292 or 6880292
5/8-18 UNJF-3B thread specification, Class 3B internal fit
8-point high-tensile hex configuration
Listed in Fabco illustrated parts manuals for TC-142-PD and TC-170
Item number 239 in TC-142-PD manual; item number 21 in TC-170 manual
Genuine Fabco hardware sold by Pro Gear and Transmission
Tech Specs
- Thread: 5/8-18 UNJF-3B (Unified National Fine, Class 3B internal)
- Hex Points: 8
- Tensile Grade: High tensile
- Fits: Fabco TC-142-PD, TC-170, TC-170-PD transfer cases
- Part Number: 688-0292 or 6880292
