Caterpillar Part reference
Caterpillar part number 0308539 is listed in the catalog as a bolt with a 12 point head. The catalog records it as a fastener, and its exact dimensions, grade, thread specification and application should be confirmed against the catalog before ordering. It appears in catalog occurrences for the D350E and D350E II, within assemblies for input transfer gears and transmission oil filtering, but these are catalog associations only and do not establish compatibility for every machine configuration.
Recorded applications
Selected catalog references that list this part. A catalog association does not confirm fitment for every machine or configuration.
Catalog context
LockedCheck the signed-in Part Book for available diagrams and the complete catalog breakdown.
| Part number | Description |
|---|---|
| 0308539 | bolt-12 point head (current part) |
| 04***12 | plug |
| 0S***85 | bolt; 12.7 mm (1/2") diameter x 38.1 mm (1 1/2") length generator to engine |
| 19***89 | yoke as |
Selected entries from this catalog unit. Other part numbers are masked. Confirm the full breakdown and your machine configuration before ordering.
View model pageGeneral guidance
In general, a 12 point head bolt has a head with twelve flat faces that accepts a 12 point socket or wrench, giving a stronger grip than a standard hex head. Heavy equipment fasteners like this are used to secure components under vibration and load, and the head style and thread details should be matched exactly to the original.
Please order using part number 0308539 as recorded in the catalog. Before purchasing, confirm the machine model, serial number and the parent assembly where this bolt is used, since catalog associations may carry conditions that are not shown here.
Catalog references
Locked