Overview
The ZF 0636.100.752 HEXAGON SCREW is a critical fastening component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part secures the housing assembly to the main transmission casing, ensuring precise clamping force and structural integrity under high-torque conditions. As a hexagonal-headed fastener, it provides reliable thread engagement and resists loosening from vibration during heavy-duty operation. The SKU 0636.100.752 is specifically designed to mate with the 2098117002: HOUSING and the 2098301052: REAR AXLE HOUS., forming a sealed, rigid connection that prevents fluid migration and maintains gear alignment.
Symptoms of Failure
- Transmission oil seepage at housing joint: When the 0636.100.752 hexagon screw loses torque or suffers thread wear, oil can weep from the mating surface between the housing and the transmission case, often visible as a slow drip under the vehicle.
- Audible clicking or knocking from the gearbox: A loose hexagon screw allows micro-movement between the 2098117002: HOUSING and the main casing, producing a metallic tapping sound during acceleration or deceleration.
- Gear engagement hesitation or slipping: Insufficient clamping force from a worn screw can cause the 2098301052: REAR AXLE HOUS. to shift slightly, disrupting gear mesh and leading to delayed or rough shifting.
- Vibration through the drivetrain: A compromised hexagon screw fails to dampen harmonic vibrations, transmitting excessive shake to the chassis during highway speeds.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0636.100.752 |
| Type | Hexagon Screw (Bolt) |
| Thread Size | M10 x 1.5 (estimated) |
| Length | 35 mm (estimated) |
| Head Type | Hexagon, 17 mm socket |
| Material | High-tensile steel, zinc-plated |
| Weight | 0.04 kg (approx.) |
| OEM Reference | ZF 0636.100.752 |
| Grade | 10.9 (estimated) |
Compatibility
This hexagon screw is a direct-fit OEM replacement for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It is also compatible with the WG180 and WG200 series when used in conjunction with the 0636103300: STUD and the 0637101164: HEXAGON NUT for additional fastening points. Always verify thread pitch and length against your specific transmission variant before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098117002 | HOUSING | Encloses gear assembly, mates with hexagon screw |
| 2098301052 | REAR AXLE HOUS. | Supports axle shaft, secured by hexagon screw |
| 0636103300 | STUD | Threaded rod for alignment and additional fastening |
| 0637101164 | HEXAGON NUT | Mates with stud for secure clamping |
| 0636102566 | STUD | Alternative stud for WG130 applications |
| 0636100960 | STUD | Short stud for housing alignment |
| 0637101167 | HEXAGON NUT | Heavy-duty nut for high-torque joints |
| 0634303044 | O-RING | Seals housing interface to prevent leaks |
| 2098317013 | BRAKE HOUSING | Encloses brake assembly, adjacent to screw |
| 2098317028 | BRAKE HOUSING | Alternate brake housing for WG131 |
