Overview
The ZF 0636.011.265 TORNILLO HEXAGONAL is a critical OEM hexagonal bolt engineered specifically for the WG260 series transmission assembly. This precision fastener secures the differential housing and internal gear clusters, ensuring torque retention under extreme load conditions in construction machinery. As a genuine OEM replacement, the SKU 0636.011.265 guarantees exact thread pitch and tensile strength matching ZF’s original specifications, preventing loosening caused by vibration during heavy-duty operations. This bolt is typically positioned at the interface between the differential carrier and the main transmission casing, where it maintains structural integrity of the drivetrain.
Symptoms of Failure
- Transmission oil seepage at housing joints: When the 0636.011.265 hexagonal bolt loses clamping force, fluid can escape past the gasket surface, leading to gradual oil loss and potential gear damage.
- Audible knocking from differential area: A loose or fatigued bolt allows the 2093109001: DIFFERENTIAL to shift slightly, producing metallic clunks during acceleration or deceleration.
- Vibration during gear engagement: Worn threads or bolt stretch cause micro-movement in the 2093309071: DIFF.HOUSING, transmitting vibration through the chassis at specific RPM ranges.
- Uneven tire wear patterns: Compromised bolt tension alters differential alignment, forcing the 0750117075: TAPER ROLLER BEARING to operate at incorrect preload, accelerating bearing fatigue.
Technical Specifications
| Parameter | Value |
|---|---|
| Thread Size | M16 x 2.0 |
| Length (mm) | 65 |
| Head Type | Hexagonal (24mm socket) |
| Material | Alloy steel 42CrMo4 |
| Hardness | HRC 32-38 |
| Tensile Strength | 10.9 grade |
| Weight (kg) | 0.18 |
| OEM Reference | 0636.011.265 |
| Surface Treatment | Zinc-nickel plating |
Compatibility
This hexagonal bolt is engineered for ZF WG series transmissions, with primary application in the WG260 model. It also fits WG180, WG200, and WG310 variants where the differential housing uses identical bolt patterns. The 0636.011.265 is commonly used alongside the 2093209095: DIFFERENTIAL assembly and the 2097309085 differential axle. Always verify thread pitch and length against your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109001 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential shaft rotation |
| 2093209095 | DIFFERENTIAL | Rear differential carrier assembly |
| 2093309071 | DIFF.HOUSING | Encloses differential gear set |
| 0631100223 | SPRING PIN | Secures shift fork alignment |
| 0730300820 | THRUST WASHER | Controls axial clearance in gear stack |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hubs |
| 5838300811 | THRUST WASHER | Reduces friction in planetary gear set |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear within differential case |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
