Overview
The ZF 0636.011.035 HEXAGON SCREW is a critical fastening component engineered specifically for the WG200 series transmission assembly. This OEM genuine part secures key internal and external assemblies, ensuring structural integrity under high-torque conditions. As a precision-machined hexagon screw, it maintains clamping force on mating surfaces, preventing relative movement between components. The SKU 0636.011.035 is directly interchangeable with original ZF factory parts, making it essential for professional rebuilds and preventive maintenance. This screw is commonly torqued into the TRANSMISSION HOUSING to anchor the output assembly, working in tandem with the OUTPUT FLANGE to transmit power reliably.
Symptoms of Failure
When the ZF 0636.011.035 hexagon screw fatigues or loosens, distinct operational issues arise. Watch for these failure indicators:
- Oil seepage at housing joints – A loose screw compromises the seal between the TRANSMISSION HOUSING and cover plates, leading to visible fluid trails.
- Abnormal driveline vibration – Insufficient clamping allows the OUTPUT FLANGE to micro-shift, causing harmonic vibrations during acceleration.
- Intermittent gear engagement – A fractured screw in the DISCONNECTION assembly can cause partial clutch pack separation, resulting in delayed shifts.
- Metallic rattling from bell housing – Backed-out screws contact rotating elements, producing distinct clicking sounds at idle.
Technical Specifications
| Parameter | Value |
|---|---|
| Thread Size | M10 x 1.5 |
| Length | 35 mm |
| Head Type | Hexagon (6-point) |
| Material | Alloy Steel, 10.9 Grade |
| Surface Finish | Zinc-Nickel Plated |
| Weight | 0.04 kg (0.09 lbs) |
| OEM Reference | 0636.011.035 |
| Torque Spec | 45 Nm ± 5 Nm |
Compatibility
This hexagon screw is designed for the ZF WG200 series, but cross-referencing confirms fitment across multiple ZF off-highway transmissions. Compatible models include:
- WG180 – All variants using the 0636.011.035 fastener pattern
- WG200 – Primary application, including WG200-6 and WG200-8
- WG210 – Select configurations with identical housing bolt circles
- WG250 – Limited compatibility; verify housing thickness before installation
Always confirm thread pitch and length against your specific TRANSMISSION HOUSING variant before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105417 | DISCONNECTION | Clutch disengagement mechanism |
| 4644303547 | OUTPUT FLANGE | Torque transfer to driveshaft |
| 4644303012 | OUTPUT FLANGE | Alternate output coupling |
| 4644101121 | TRANSMISSION HOUSING | Main structural casing |
| 4644301240 | TRANSMISSION HOUSING | Reinforced housing variant |
| 0730365067 | TYPE PLATE | Identification and rating label |
| 0631311009 | GROOVED STUD | Alignment and retention pin |
| 4644301286 | COVER PLATE | Seals access openings |
| 4644301242 | COVER SHEET | Thin protective shroud |
| 0636101026 | CAP SCREW | Secondary fastening for covers |
