Overview
The ZF 0737.006.111 HEXAGON NUT is a critical fastening component engineered specifically for the WG65 series transmission. This OEM genuine part secures the 4616105413: OUTPUT assembly to the 4616101117: TRANSMISSION HOUSING, ensuring precise axial retention of rotating elements. Designed to withstand high torque loads and thermal cycling, this hexagon nut prevents loosening under vibration. The SKU 0737.006.111 is a direct replacement for original equipment, maintaining factory-specified clamping force in the WG65 gear train.
Symptoms of Failure
- Oil leaks at the output flange interface: A worn or stripped hexagon nut can cause the 4616203017: OUTPUT FLANGE to shift, breaking the seal and allowing transmission fluid to escape.
- Gear slipping under load: Insufficient nut torque leads to axial play in the output shaft, causing intermittent power loss and delayed engagement.
- Unusual driveline vibration: When the nut loosens, the output assembly develops radial movement, producing a low-frequency hum or shudder during acceleration.
- Increased backlash in the drivetrain: Worn threads on the nut create excessive clearance between the output shaft and housing, resulting in a clunking noise when shifting between forward and reverse.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0737.006.111 |
| Type | Hexagon Nut (Flanged) |
| Thread Size | M30 x 1.5 (estimated) |
| Width Across Flats | 46 mm |
| Material | Steel, zinc-plated (DIN 267) |
| Weight | 0.12 kg |
| OEM Reference | ZF 0737.006.111 |
| Torque Specification | 180 Nm + 90° (estimated) |
Compatibility
This hexagon nut is primarily designed for the WG65 series transmission. It is also compatible with the following ZF models that share the same output shaft geometry: WG180, WG200, WG210, and WG250. Always verify thread pitch and flange diameter against your specific transmission variant before installation. The nut works in conjunction with the 0636011038: HEXAGON SCREW used in adjacent housing fastening points.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from gearset to flange |
| 4616203017 | OUTPUT FLANGE | Connects transmission to driveshaft |
| 4616101117 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 0636011038 | HEXAGON SCREW | Secures housing cover plates |
| 0636016015 | HEXAGON SCREW | Fastens bearing retainers |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals output flange to housing |
| 0732611049 | FILTER INSERT | Traps debris in hydraulic circuit |
| 0634303718 | O-RING | Seals filter housing cover |
| 0636610082 | STUD | Provides threaded mounting for bellhousing |
