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Description
0000 995 0806 Collar Nut M8 | STIHL MS 261, MS 261 C-Q & Compatible Models
The STIHL 0000 995 0806 Collar Nut M8 is a genuine OEM replacement collar nut / captive bar nut used in the chain sprocket cover assembly of compatible STIHL chainsaws. It is specifically associated with the MS 261 family and other compatible models. STIHL parts documentation identifies it as an M8 collar nut, with two required in the applicable chain sprocket cover assembly.
Features That Make a Difference
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Genuine STIHL OEM replacement part
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Part Number: 0000 995 0806
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Alternate Part Number: 00009950806
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Product: Collar Nut M8
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Product Type: Captive / Collar Nut
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Used with the chain sprocket cover / bar mounting assembly.
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Designed for proper fit within the applicable sprocket-cover assembly.
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Helps secure the guide bar and chain sprocket cover components.
Specifications
| Specification | Details |
|---|---|
| Part Number | 0000 995 0806 |
| Alternate Part Number | 00009950806 |
| Product | Collar Nut |
| Size | M8 |
| Product Type | Captive / Collar Nut |
| Brand | STIHL |
| Application | Chain sprocket cover / bar mounting assembly |
| Part Type | Genuine OEM Replacement |
STIHL MS 261 parts documentation lists 0000 995 0806 as an M8 collar nut, with a quantity of two in the applicable chain sprocket cover assembly.
Compatibility
The supplied application information includes:
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MS 241 C-M — Chain tensioner / Chain sprocket cover
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MS 261 — Chain tensioner / Chain sprocket cover
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MS 261 C-Q — Chain tensioner / Chain sprocket cover
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MS 261 C-M — Chain tensioner / Chain sprocket cover
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MS 261 C-MQ — Chain tensioner / Chain sprocket cover
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MS 362 C-M — Chain tensioner / Chain sprocket cover
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MS 362 C-MQ — Chain tensioner / Chain sprocket cover
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GS 461 — Hand guard / Chain sprocket cover
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MS 661 Magnum — Chain sprocket cover
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MS 661 C-M Magnum — Chain sprocket cover
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MS 661 C-M R Magnum — Crankcase / Chain sprocket cover
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MS 661-R Magnum — Crankcase / Chain sprocket cover
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MSE 250 C-Q — Chain sprocket cover / Tools
Third-party parts references also list the 0000 995 0806 collar nut for multiple MS 241, MS 261, MS 362, and MS 661 configurations.
Always verify the exact model and current STIHL parts diagram before ordering.
What Does the Collar Nut Do?
The collar nut is part of the bar and chain-sprocket-cover mounting system. On applicable STIHL designs, the captive nuts are installed in the sprocket cover and work with the corresponding collar studs to secure the cover and guide-bar assembly.
STIHL service documentation specifically describes the 0000 995 0806 as a collar nut used with the sprocket cover assembly.
Replacement Considerations
A collar nut may need replacement if it is:
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Damaged or deformed.
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Loose within the sprocket cover.
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Missing.
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No longer properly retained in the cover.
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Damaged during sprocket-cover service.
For the MS 261 quick-chain-tensioner design, STIHL service documentation specifies that replacement collar nuts are installed using the appropriate special tool.
Important Compatibility Note
The 0000 995 0806 is a small hardware component, but correct compatibility is important because STIHL uses different sprocket-cover and bar-mounting configurations across models.
For the MS 261, STIHL documentation notes that the applicable sprocket-cover design is specific to the MS 261 and that the collar studs must match the sprocket-cover configuration.
Verify your exact model, model variant, and parts diagram before purchasing.
Why Buy from Barry’s Power Equipment?
Barry’s Power Equipment provides quality STIHL OEM and replacement parts for chainsaws and outdoor power equipment.
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Genuine OEM replacement parts
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Quality STIHL components
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Competitive Pricing
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Fast Shipping
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Expert Customer Support
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Parts for professional and residential equipment
Replace a damaged or missing captive bar nut with the STIHL 0000 995 0806 M8 Collar Nut, designed for compatible chain sprocket cover and bar-mounting applications.
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