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Description
M-839020-S – Kohler Flange Screw M8 x 1.25 x 20 mm (Genuine OEM Replacement Bolt)
The Kohler M-839020-S Flange Screw is a genuine OEM replacement fastener engineered for secure assembly and reliable performance in a wide range of Kohler engines and outdoor power equipment. Featuring an M8 x 1.25 metric thread with a 20 mm length, this flange screw provides superior holding power while its integrated flange distributes clamping force evenly, helping prevent loosening caused by engine vibration.
Manufactured from high-strength steel with a durable corrosion-resistant finish, the M-839020-S is built to withstand demanding operating conditions and deliver long-lasting reliability in both residential and commercial applications.
Product Details
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Part Number: M-839020-S
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Brand: Kohler
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Part Type: Flange Screw
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Thread Size: M8 x 1.25
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Length: 20 mm
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Material: High-Strength Steel
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Color: Black
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Finish: Corrosion-Resistant Coating
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Installation: Direct OEM Replacement
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Genuine Kohler OEM Part
Specifications
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Thread Size: M8 x 1.25
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Length: 20 mm
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Color: Black
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Fastener Type: Flange Screw
Key Features
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Genuine Kohler OEM replacement screw
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M8 x 1.25 metric thread
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20 mm overall length
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Integrated flange eliminates the need for a separate washer in many applications
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High-strength steel construction
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Corrosion-resistant black finish
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Designed to withstand engine vibration and heavy-duty use
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Direct OEM fit and performance
Function
The Kohler M-839020-S Flange Screw securely fastens engine and equipment components while maintaining proper clamping force. The built-in flange spreads the load over a larger surface area, reducing the risk of component damage and improving resistance to loosening during operation.
Compatible Equipment
The Kohler M-839020-S is used on a variety of Kohler Command, Courage, Confidant, and other Kohler gasoline engines found in:
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Zero-turn mowers
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Riding lawn mowers
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Walk-behind mowers
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Garden tractors
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Commercial turf equipment
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Generators
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Utility equipment
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Other outdoor power equipment using this OEM fastener
Always verify your engine model and illustrated parts list before ordering.
Who Is This For?
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Homeowners
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Commercial landscapers
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Small engine repair technicians
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Equipment maintenance professionals
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Outdoor power equipment dealers
Recommended Applications
Ideal for replacing worn, damaged, or missing OEM flange screws during engine service, repairs, rebuilds, or routine maintenance.
Pros
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Genuine Kohler OEM quality
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Precision M8 x 1.25 thread
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Integrated flange for improved load distribution
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High-strength steel construction
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Corrosion-resistant finish
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Excellent vibration resistance
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Easy direct replacement
Cons
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Fits only applications requiring an M8 x 1.25 x 20 mm flange screw
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Proper torque specifications should be followed during installation
Comparison – Kohler M-839020-S vs Standard Hex Bolts
Kohler M-839020-S Flange Screw
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Genuine OEM specifications
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Built-in flange improves clamping force
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Better resistance to loosening
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Precision fit for Kohler engines
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Long-lasting corrosion protection
Standard Hex Bolt
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May require a separate washer
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Less load distribution
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May not meet OEM dimensional specifications
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Reduced vibration resistance
Why Buy from Barry's Power Equipment?
Barry's Power Equipment supplies genuine Kohler OEM engine parts trusted by professional landscapers, repair technicians, and equipment owners.
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Genuine OEM Kohler replacement parts
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Fast nationwide shipping
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Competitive pricing
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Expert technical support
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Extensive inventory for Kohler and other leading outdoor power equipment brands
