The Fabco 688-0266 or 6880266 is a genuine OEM 1/2-20 hex nut designed for off-highway applications. Fabco specializes in transfer cases, PTOs, and steerable drive axles, and this fastener is sourced as an OEM replacement component for those systems. Using the correct OEM fastener matters on heavy-duty off-highway equipment where torque retention and thread integrity are critical. Pro Gear and Transmission carries this part directly. Not sure this is the right nut for your build? Give us a call to confirm proper fit.
Features
Genuine Fabco OEM part, not an aftermarket substitute
1/2-20 thread specification
Hex-style nut for standard wrench engagement
Designated for off-highway equipment applications
Part numbers: 688-0266 or 6880266
