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- 9022 399 1020 Spline Screw M5x20 STIHL (Genuine OEM Part)
Description
9022 399 1020 Spline Screw M5x20 STIHL (Genuine OEM Part)
Overview
The STIHL 9022 399 1020 Spline Screw (IS-M5x20) is a genuine OEM fastener designed for securing critical engine components such as cylinder, muffler, crankcase, and shroud assemblies. This precision screw ensures proper clamping force and stability in high-vibration environments common to professional-grade outdoor power equipment.
Manufactured to STIHL specifications, it provides exact fitment, durability, and reliable performance under demanding operating conditions.
Product Details
- Part Number: 9022 399 1020
- Brand: STIHL
- Description: Spline Screw
- Size: M5 x 20
- Part Type: Engine Fastener / Screw
- Application: Cylinder, muffler, crankcase, shroud assemblies
- OEM Status: Genuine STIHL OEM Part
Function
- Secures engine components in place
- Maintains proper torque and structural integrity
- Resists loosening under vibration
- Ensures safe and stable equipment operation
Compatibility
Fits STIHL Models:
- MS 881 Magnum / MS 881-R Magnum
- MS 661 Magnum / MS 661 C-M / MS 661-R Magnum
- MS 500i / 500i-R / Centennial Edition
- MS 400 C-M
- MS 362 / 362-R / 362 C-M / 362 C-MQ / 362 C-M R
- TS 410 / TS 410-A
- TS 420 / TS 420-A
- TS 480i-A
- TS 500i-A
- TSA 300
Used in assemblies such as:
- Cylinder
- Muffler
- Crankcase
- Shroud
- Guard / connector systems
⚠️ Always verify part number, size (M5x20), and application before ordering.
How It’s Used
This spline screw is used to fasten engine components together, typically requiring a spline (Torx-style) tool for installation and removal. Proper torque is essential for secure mounting.
Maintenance Tips
- Inspect threads for wear or damage before reuse
- Replace if stripped or corroded
- Use correct torque specifications during installation
- Apply threadlocker if required for high-vibration areas
