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- 1138 664 2400 – STIHL Collar Screw M8 (Genuine OEM Part)
Description
1138 664 2400 – STIHL Collar Screw M8 (Genuine OEM Part)
The STIHL 1138 664 2400 Collar Screw M8 is a genuine OEM fastening component engineered to secure critical crankcase and crankshaft assemblies on a wide range of STIHL professional and Magnum-series chainsaws. This collar screw features an integrated shoulder (collar) design that ensures precise alignment, correct spacing, and secure clamping force in high-stress engine applications.
Manufactured to STIHL original factory specifications, this M8 collar screw is produced from high-strength, heat-treated steel to withstand extreme engine vibration, torque loads, and demanding professional use. Proper installation of the correct OEM collar screw is essential for maintaining crankcase integrity and long-term engine reliability.
Product Details
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Manufacturer Part Number: 1138 664 2400
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Brand: STIHL
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Part Name: Collar Screw
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Thread Size: M8
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OEM Status: Genuine STIHL OEM Part
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Function: Secures crankcase and crankshaft-related components
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Material: Hardened, high-strength steel
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Condition: New
Compatibility
The STIHL 1138 664 2400 Collar Screw M8 is used on the following STIHL chainsaw models:
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MS 341
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MS 361
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MS 361 C-Q
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MS 362
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MS 362-R
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MS 362 C-Q
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MS 362 C-M
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MS 362 C-M R
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MS 362-VW
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MS 440 Magnum
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MS 440-R Magnum
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MS 440-VW Magnum Arctic
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MS 441
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MS 441-R
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MS 441 C-Q
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MS 441 C-M
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MS 441 C-M R
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MS 441 C-MQ
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MS 441-VW
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MS 460 Magnum
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MS 460-R Magnum
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MS 460-VW Magnum Arctic
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MS 461
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MS 461-R
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MS 461-R Rescue
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MS 461-VW
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MS 650 Magnum
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MS 650-R Magnum
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MS 660 Magnum
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MS 660-R Magnum
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MS 661 C-M R Magnum
(Commonly installed in crankcase and crankshaft assemblies, and on specific models also used with the wrap-around handlebar chain sprocket cover assembly.)
This genuine STIHL collar screw ensures precise component alignment, maintains factory torque specifications, and restores original structural integrity when replacing worn or damaged crankcase fasteners on compatible STIHL chainsaws.
