Overview
The ZF 0636.010.263 HEXAGON SCREW is a critical fastening component engineered specifically for the WG 65 series transmission assembly. This OEM genuine part secures the 4616105413: OUTPUT and 4616203017: OUTPUT FLANGE to the 4616101117: TRANSMISSION HOUSING, ensuring precise alignment and torque retention under heavy-duty operating conditions. The SKU 0636.010.263 is manufactured to ZF’s exacting tolerances, providing a direct replacement that maintains the structural integrity of the gearbox. Unlike generic bolts, this hexagon screw is heat-treated and coated to resist corrosion and vibrational loosening in high-torque applications.
Symptoms of Failure
- Transmission oil seepage at the output flange joint: A worn or stretched 0636.010.263 screw can cause micro-gaps between the housing and flange, leading to slow oil weeping that stains the bell housing.
- Audible clunking during gear engagement: When this fastener loses clamping force, the output shaft assembly develops axial play, producing a metallic knock when shifting from neutral to drive.
- Vibration at highway speeds: Loose hexagon screws allow the output flange to wobble, transmitting harmonic vibrations through the driveline that worsen above 45 mph.
- Premature wear of the O-ring seal: Insufficient screw tension deforms the 0634313118: O-RING, accelerating seal failure and contaminating the transmission fluid.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0636.010.263 |
| Thread Size | M10 x 1.5 |
| Overall Length | 35 mm |
| Head Type | Hexagon (SW 13 mm) |
| Material | Alloy Steel, 10.9 Grade |
| Surface Finish | Zinc-Nickel Plated |
| Weight | 0.032 kg |
| OEM Reference | ZF 0636.010.263 |
Compatibility
This hexagon screw is designed for the ZF WG 65 series, including the WG65, WG120, WG180, and WG200 transmission models. It is also used in select off-highway and marine gearboxes that share the same output flange mounting pattern. Always verify the thread pitch and length against your existing fastener before installation. For related fastening needs, consider the 0636011038: HEXAGON SCREW for adjacent housing points.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from planetary gears to flange |
| 4616203017 | OUTPUT FLANGE | Connects transmission to driveshaft |
| 4616101117 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 0636011038 | HEXAGON SCREW | Secures intermediate housing plates |
| 0636016015 | HEXAGON SCREW | Fastens bearing retainer caps |
| 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 oil cooler line port |
| 0636610082 | STUD | Provides threaded mount for valve body |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
