ZF 0636.020.116 HEXAGON SCREW for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 0636.020.116 HEXAGON SCREW is a critical fastening component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part secures internal assemblies within the transmission housing, ensuring precise alignment of gear trains and clutch packs. As a high-tensile fastener, it withstands extreme torsional loads and thermal cycling common in heavy-duty industrial applications. The SKU 0636.020.116 is specifically designed to mate with the 2094101012: TRANSMISSION HOUSING and adjacent 2094301036: HOUSING components, forming a leak-proof structural joint that maintains hydraulic pressure integrity.

Symptoms of Failure

• Transmission fluid seepage at housing joints – A loose or fatigued hexagon screw allows oil to bypass the 2094301071: COVER seal, creating visible drips on the bell housing.
• Intermittent gear engagement hesitation – When the screw loses clamping force, the 2094298057: HOUSING shifts microscopically, causing delayed shift response under load.
• Metallic rattling during low-speed operation – A stripped or stretched hexagon screw permits vibration between mating surfaces, producing a distinct chatter at 800-1200 RPM.
• Progressive oil loss from vent ports – Compromised fasteners allow internal pressure to escape, forcing fluid out through breather valves and reducing lubrication to planetary gears.

Technical Specifications

Compatibility

This hexagon screw is validated for ZF WG-series transmissions including WG100, WG130, WG131, WG180, and WG200 models. It is also used in select off-highway variants (WG210, WG250) where the same housing interface exists. Always verify thread pitch and length against the 2094301036: HOUSING bore depth before installation. For complete sealing integrity, pair this screw with the 0634303085: O-RING and 2094301030: GASKET during rebuilds.

Related Components

{
“@context”: “https://schema.org”,
“@type”: “FAQPage”,
“mainEntity”: [
{
“@type”: “Question”,
“name”: “What is the torque specification for ZF 0636.020.116 hexagon screw?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “The recommended installation torque is 55 Nm followed by a 90-degree angle tightening. Always use a calibrated torque wrench and replace the screw after each removal to maintain clamping integrity.”
}
},
{
“@type”: “Question”,
“name”: “Can the 0636.020.116 screw be used in WG200 transmissions?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Yes, this screw is compatible with WG200 models when used in the housing-to-cover interface. However, verify thread engagement depth as WG200 uses a thicker housing wall requiring the 35 mm length variant.”
}
},
{
“@type”: “Question”,
“name”: “What causes premature failure of this hexagon screw?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Common failure causes include over-torquing during installation, corrosion from contaminated transmission fluid, and cyclic fatigue from repeated thermal expansion in the housing assembly.”
}
}
]
}