The Eaton Fuller X8C409 or X-8C-409 is a 1/4-20 x 5/8" hex washer head capscrew used throughout Eaton Fuller transmission assemblies. According to Eaton's illustrated parts manuals, this fastener appears in the case, shift bar housing, inertia brake assembly, and integral oil pump groups across a broad range of units, including FS-5205, FS-6406, FM-14D310B-LST, FM-15D310B-LST, FO-16D313E-LEP, and RT-series axle-transmission combinations such as the RTAO-14710B-AC and RT-14910B-AS2. Call us to confirm the right quantity for your rebuild or repair job.
Interchanges:
- 3947108
- X8C409SP
Found in 16 Eaton kits and assemblies. Top 12:
Features
Genuine Eaton Fuller capscrew, part number X8C409 or X-8C-409
1/4-20 thread x 5/8" length hex washer head capscrew
Used in case, shift bar housing, inertia brake assembly, and integral oil pump groups
Fits a wide range of FS, FO, FSO, FM, FOM, RT, and RTAO series transmissions
Sold individually; call us to confirm quantity needed for your application
Tech Specs
- Thread Size: 1/4-20
- Length: 5/8"
- Head Style: Hex Washer Head Capscrew
- Unit of Measure: Each
Used in 304 Eaton Fuller models
