Losing a bar nut or dealing with a stripped one on a Stihl chainsaw immediately compromises bar security and can lead to dangerous chain derailment or cover damage under load. Shoppers for stihl chainsaw bar nut often face inconsistent thread quality, poor flange fit that allows vibration loosening, and limited model coverage that forces multiple purchases for different saws in the fleet. Selecting the right replacement requires matching OEM dimensions precisely while balancing pack quantity against real-world replacement frequency in professional or homeowner settings.
When choosing stihl chainsaw bar nut in August 2026, prioritize exact compatibility with Stihl models such as the MS170 through MS660 series, verified replacement of part number 0000 955 0804, steel construction for torque retention, and multi-packs that keep spares on hand without exceeding typical budgets. Our evaluation of 15 options from Husqvarna, Hipa, Tormurbutl and more shows packs delivering reliable M8 threading and flange design within the $3.99 – $9.99 spectrum for consistent performance. For context on how these parts integrate with popular saws, see our coverage of understanding the core specifications of Stihl MS250 chainsaws when planning maintenance kits.
Pros
- Broad compatibility across many Stihl MS and older model series.
- Includes 6 bar nuts, adding value for users who want spare parts.
- Direct replacement reference part number is provided for easier identification.
Cons
- Compatibility is broad but not universal, so buyers still need to verify their exact chainsaw model and part number.
- No detailed dimensions or material grade are listed in the product data.
- This is a replacement part only, so it does not include other sprocket cover hardware.
Overview & Design: The Hipa sprocket cover bar nut is a replacement chainsaw part made for a wide range of Stihl models. It is listed as a pack of 6 and is intended to replace lost or damaged bar nuts with an OEM-style fit for many common Stihl saws.
Performance & Key Features: The main advantage here is compatibility. The part number STHIL 0000 955 0804 is provided, and the listing covers many MS series models plus several older Stihl chainsaws. For users maintaining equipment regularly, having multiple nuts in one package can reduce downtime and simplify repairs.
Drawbacks & Considerations: This is not a universal part, so exact model matching still matters. The product data does not include detailed measurements, which means buyers may need to confirm fit before ordering. It is also a replacement component only, not a full sprocket cover assembly.
Verdict: This Hipa bar nut pack is best suited for Stihl chainsaw owners, repair shops, and anyone who wants low-cost spare hardware for maintenance. If you need a simple replacement part for a compatible saw, it offers a practical and straightforward solution.
Pros
- Wide model coverage across many Stihl chainsaws.
- Covers a known replacement part number for easier identification.
- Six-count package adds value for repairs and spare parts inventory.
- Simple maintenance part suited to DIY users and repair shops.
Cons
- Compatibility is specific to listed Stihl models, so buyers must verify fit before ordering.
- No detailed dimensions or material grade are provided in the product data.
- This is a replacement hardware item, not a full repair kit or bundled service part set.
Overview: The Hipa 6 Pieces Chainsaw Bar Nut is a replacement hardware set made for a wide range of Stihl chainsaw models. It is intended to replace lost or damaged bar nuts and uses the Stihl part number 0000 955 0804 for reference.
Performance & Key Features: This set is designed for practical maintenance, especially when a chainsaw bar nut needs a quick replacement to keep the bar secured properly. The package includes 6 pieces, which is helpful for users who service multiple saws or want spares on hand. Compatibility covers many MS-series and older 0xx-series Stihl models, including popular homeowner and pro-use saws.
Drawbacks & Considerations: The main limitation is the need to confirm fit carefully, since compatibility is only guaranteed for the listed models. The product data does not provide dimensions or detailed material specifications, so buyers looking for exact hardware measurements may need to compare against their original part.
Verdict: This is a practical, budget-friendly replacement part for Stihl owners, DIY users, and small repair shops that need a bar nut with broad model support. It is best suited to buyers who already know the correct part number or have verified compatibility with their chainsaw.
Pros
- Replaces STIHL OEM part number 0000 955 0804.
- Six-piece pack provides multiple replacements or backups.
- Compatible with a broad list of STIHL chainsaw models.
- Metal construction is specified for replacing damaged or missing bar nuts.
Cons
- Compatibility should be verified against the exact chainsaw model before purchase.
- Only bar nuts are included, not the sprocket cover, guide bar, or other mounting hardware.
- No dimensions or thread specifications are provided in the source product data.
Overview & Design: The Hipa 0000 955 0804 sprocket cover bar nut set is a replacement hardware pack designed for many STIHL chainsaw models. The pack includes 6 metal bar nuts intended to replace lost, worn, or damaged nuts used to secure the sprocket cover and guide bar area.
Performance & Key Features: In real-world chainsaw maintenance, bar nuts are small but essential parts because they help keep the bar assembly properly fastened. This set is especially useful for users servicing compatible STIHL saws such as MS170, MS180, MS250, MS271, MS290, MS391, MS460, MS660, and many older 017, 018, 021, 025, 026, 029, 036, 044, and 066 models.
Drawbacks & Considerations: Buyers should confirm that their chainsaw uses replacement part number 0000 955 0804 before ordering. The package includes only 6 bar nuts, so it does not replace the sprocket cover, guide bar, chain, studs, or other hardware. The provided product data also does not list thread size or dimensions.
Verdict: The Hipa 0000 955 0804 6-pack is a practical maintenance item for STIHL chainsaw owners, farm users, and DIY outdoor equipment repairers who want spare sprocket cover bar nuts on hand. It offers the most value to users who already know their saw is compatible and need simple replacement hardware for routine service.
Pros
- Compatible with a broad range of listed Stihl MS series chainsaw models.
- Iron construction provides a sturdy replacement option for bar fastening.
- Easy to install with a wrench after removing the old bar nut.
- Useful multipack format for maintenance, repair kits, or backup parts.
Cons
- The listing information is inconsistent, with the title stating 10 pieces while the feature text states 23 pieces.
- Compatibility should be checked carefully against the exact chainsaw model before purchase.
- No dimensions, thread size, or detailed specifications are provided in the supplied product data.
Overview & Design: The OSROENE chainsaw bar nuts are replacement chainsaw parts intended for compatible Stihl chainsaw accessories. They are made from iron material, giving them a sturdy and practical build for securing the chainsaw bar during standard maintenance and repair work.
Performance & Key Features: These bar nuts are designed to replace worn, missing, or damaged fasteners on listed Stihl MS series chainsaws, including models such as MS170, MS240, MS260, MS290, MS310, MS390, MS440, MS460, MS640, MS650, and MS660. Installation is straightforward: remove the old nut and install the replacement with a wrench.
- Iron construction supports long-lasting use and helps resist deformation.
- Broad listed compatibility makes the set useful for owners of multiple supported Stihl chainsaw models.
- Keeping spare bar nuts available can help reduce downtime during bar or chain maintenance.
Drawbacks & Considerations: Buyers should note that the product data contains a quantity mismatch, with the title referencing 10 pieces while the feature section states 23 pieces. The listing also does not provide thread size, dimensions, or detailed fitment measurements, so checking your chainsaw model and existing hardware is important before ordering.
Verdict: The OSROENE chainsaw bar nuts are best suited for Stihl MS series chainsaw owners who want simple replacement bar fasteners for maintenance or backup use. They offer practical value if your model is included in the compatibility list, but buyers should verify quantity and fitment details carefully.
Pros
- Matches the specified OEM-style part number 0000 955 0804.
- Compatible with many STIHL chainsaw models across multiple series.
- Sold as a 2-pack for convenience and backup.
- Low-complexity replacement part for common maintenance and repair jobs.
Cons
- Compatibility depends on matching the exact part number and saw model, so buyers should verify fit before ordering.
- This is only the bar nut, so it does not include the full sprocket cover or other chainsaw hardware.
- Fitment spans many models, but the listing does not provide dimensions or material details.
Overview: The Tormurbutl 0000 955 0804 is a replacement sprocket cover bar nut made for a long list of compatible STIHL chainsaws. It is a small but important service part for users who need to replace a missing, worn, or damaged nut on the sprocket cover assembly.
Performance and Features: The main value here is straightforward compatibility with the stated part number and the wide model coverage across MS-series and older STIHL saws. The 2-pack format also adds convenience, especially for routine maintenance or when keeping a spare on hand for future repairs.
Drawbacks and Considerations: This product is limited to the bar nut only, so it will not solve issues that involve the full sprocket cover or other chain components. As with any replacement fastener, buyers should confirm the exact fit against their saw model and part number before purchasing.
Verdict: This is a practical replacement choice for STIHL owners who need the specified 0000 955 0804 bar nut and want a simple, focused repair part. It is best suited to users who value part-number matching and compatibility across many listed saw models.
Pros
- Broad compatibility with many Stihl chainsaw models, including MS170, MS180, MS250, MS360, and MS660 families.
- Includes both the wrench tool and replacement bar nuts, so it addresses two common maintenance needs in one package.
- Stainless steel build offers solid durability for regular shop or field use.
Cons
- Compatibility is brand- and model-specific, so buyers need to verify fit before ordering.
- The listing does not provide detailed dimensions for every component beyond the bar nut measurements, which may make comparison harder.
- This is a manual hand tool kit, so it does not add power-assisted convenience for frequent heavy-duty service.
Overview: The MetVot 3PCS 13 x 19 mm Chainsaw Wrench with 10 PCS Sprocket Cover Bar Nut Replacement is a repair and maintenance accessory kit for Stihl chainsaws. It combines a stainless steel combination wrench with replacement bar nuts, giving users a practical set for basic chain saw service.
Performance: The wrench is designed as a 2-in-1 tool with a slotted screwdriver and a socket sized for round fasteners from 13 mm to 19 mm. That makes it useful for tightening, loosening, and general maintenance tasks, while the included bar nuts are intended as replacements for the specified Stihl part number and many compatible models.
Drawbacks: This kit is not universal, so compatibility must be checked carefully before purchase. It is also a straightforward manual tool set, so users looking for advanced or powered service equipment will need something more specialized.
Verdict: For Stihl owners who want a durable basic wrench and extra replacement bar nuts in one package, this set offers solid practical value. It is best suited to homeowners, repair-minded users, and small shops that service compatible Stihl chainsaws.
Pros
- Wide compatibility across many Stihl MS series and older models.
- Includes 5 nuts, so you have extras for future maintenance.
- Direct replacement for part number 0000 955 0804.
- Metal build is appropriate for regular chainsaw hardware use.
Cons
- Aftermarket part, not an original Stihl OEM component.
- Fit should be verified by comparing part number, size, and original nut shape before ordering.
- No dimensions or detailed specifications are provided in the listing.
Overview & Design: The LETAYAR sprocket cover bar nuts are aftermarket replacement fasteners for Stihl chainsaws, made to replace part number 0000 955 0804. The silver metal nuts are intended to secure the guide bar and sprocket cover during regular maintenance.
Performance & Key Features: This 5-pack is useful for owners who need spare bar nuts after loss, stripping, rounding, or general wear. Compatibility covers many Stihl MS series saws as well as several older models, making it a practical maintenance item for a wide range of users.
Drawbacks & Considerations:
- It is an aftermarket part, not an original Stihl component.
- Fit should be confirmed by comparing the part number, size, and original nut shape before ordering.
- No dimensions are provided in the listing, so exact compatibility cannot be verified from specs alone.
Verdict: This is a sensible replacement option for Stihl owners who want extra bar nuts on hand. It is best suited to users who already know their saw's part compatibility and need a straightforward maintenance part.
Pros
- Covers a wide range of compatible Stihl chainsaw models listed in the product data.
- Includes six bar nuts, which adds value for repeated maintenance or backup replacements.
- The scrench size is clearly specified as 13 mm x 19 mm, helping buyers verify fit before purchase.
Cons
- Compatibility is limited to the listed Stihl models, so it may not fit all chainsaws.
- No detailed material or durability specification is provided in the raw product data.
- It is a basic replacement kit, so it does not include additional repair tools or extra hardware beyond the listed items.
Overview: The Liofairy 13 x 19 mm Chainsaw Wrench Scrench and 6 Bar Nuts kit is a replacement accessory set made for compatible Stihl chainsaws. It is a straightforward maintenance item intended for users who need a spare wrench and replacement bar nuts for routine repair work.
Performance: The set includes one scrench and six bar nuts, which makes it practical for common service tasks such as tightening hardware or replacing worn fasteners. The stated 13 mm x 19 mm wrench size and broad model compatibility across many Stihl MS and 017-048 series saws are the main reasons to consider it.
Drawbacks: The product data does not provide material details, finish, or any performance testing information, so durability is difficult to judge from the listing alone. Buyers should also verify fit carefully, since compatibility is limited to the specified models and may not extend to other chainsaws.
Verdict: This kit is best suited for Stihl owners who want a simple, low-cost replacement scrench and extra bar nuts for maintenance or emergency repairs. It is a practical buy if your model is listed, but it is not a universal chainsaw tool set.
Pros
- Comes as a 6-piece pack for convenient spare replacement.
- Compatible with many listed Stihl chainsaw models across older and MS-series lines.
- Simple maintenance accessory for sprocket cover and chain bar service.
- Affordable replacement-style part for users maintaining multiple saws.
Cons
- Compatibility depends on the exact chainsaw model, so buyers should verify their model before ordering.
- No dimensions, thread specification, or material details are provided in the product data.
- This is only a bar nut pack and does not include a sprocket cover, guide bar, chain, or tools.
Overview & Design: The Liofairy 6-pack sprocket cover bar nut set is a replacement hardware accessory for compatible Stihl chainsaws. It is intended to replace missing, worn, or damaged chainsaw chain bar nuts used around the sprocket cover and guide bar assembly.
Performance & Key Features: The main value is broad listed compatibility. The product data identifies fitment for many Stihl models, including MS170, MS180, MS192T, MS200, MS210, MS211, MS230, MS250, MS260, MS271, MS290, MS291, MS460, MS660 and several 010, 020, 026, 036, 044, 046, 064 and 066 series models. With 6 pieces included, it is practical for routine chainsaw maintenance, shop storage, or keeping spares in a field repair kit.
Drawbacks & Considerations: The listing does not provide thread size, material, finish, or exact dimensions, so fit should be confirmed by chainsaw model rather than specifications alone. It is also important to note that this package only includes sprocket cover bar nuts and does not include the sprocket cover, guide bar, chain, or installation tools.
Verdict: This Liofairy bar nut pack is best for Stihl chainsaw owners, repair shops, and outdoor equipment users who need inexpensive spare nuts for compatible models. It is a straightforward maintenance part with strong model coverage, but buyers should verify fitment carefully before purchase.
Pros
- Covers a broad list of compatible Stihl chainsaw models and series.
- Five included nuts provide extra spares for maintenance or repeated repairs.
- Threads on smoothly and is designed to match the genuine size.
- Aftermarket replacement gives a budget-friendly alternative for common bar nut replacement.
Cons
- Compatibility depends on matching the saw model and part number 0000 955 0804.
- It is only a bar nut, so it will not fix other sprocket cover or chain system issues.
- This is a replacement part rather than an official Stihl-branded component.
Overview: The Hipa 5 Pieces MS170 MS180 Sprocket Cover Bar Nut is an aftermarket replacement hardware kit for compatible Stihl chainsaws. It is made for users who need a simple, low-cost replacement for part number 0000 955 0804.
Performance: According to the product details, the nut threads on smoothly, matches the genuine size, and is designed to stay securely tightened. That makes it a practical choice for routine maintenance, bar swaps, and common repair work on a wide range of Stihl MS and older model saws.
Considerations: Fitment is the main thing to verify before buying. This is a replacement bar nut only, so it will not address other problems with the sprocket cover, chain brake, or mounting hardware. It is also not an official Stihl-branded part.
Verdict: For DIY users and small repair jobs, this 5-pack offers useful value and broad compatibility. It is best suited to owners who already know their saw uses part number 0000 955 0804 and want a practical replacement option.
Pros
- Genuine Husqvarna replacement part.
- Includes 4 nuts in one package.
- Designed for use with a standard 13mm scrench.
- Flange-side construction supports secure retention.
Cons
- Compatibility is limited to most Husqvarna chainsaws, so fit should be checked before ordering.
- No dimensions, material details, or model-specific compatibility list are provided.
- This is a replacement hardware item only and does not include any additional tools or guide bar components.
Overview: The Husqvarna Chainsaw Bar Nuts (4) are original replacement guide bar nuts intended for maintaining secure bar retention on compatible Husqvarna chainsaws. The package includes four nuts, which makes it a practical maintenance part for users who need a replacement or spare set.
Performance and Features: These bar nuts are designed to work with a standard 13mm scrench and feature a flange side for proper retention. In real-world use, that makes them a straightforward part for routine chainsaw upkeep when the original nuts are worn, missing, or need replacement.
Drawbacks and Considerations: The main limitation is compatibility. The listing says they fit most Husqvarna chainsaws, but it does not provide a full model list, so buyers should verify fit before ordering. No material specifications or dimensions are included either.
Verdict: This is a sensible pick for Husqvarna owners who want a genuine replacement hardware set for basic chainsaw maintenance. It offers the most value to users who already know their saw is compatible and need a simple, dependable replacement part.
Pros
- Includes 10 replacement nuts in one package.
- Iron material offers a sturdy, durable build.
- Simple installation with a wrench.
- Specific compatibility list helps buyers confirm fit for supported Stihl models.
Cons
- Compatibility is limited, so buyers need to verify their exact chainsaw model before ordering.
- The product data does not provide dimensions or thread specifications.
- Only the nuts are included, with no extra tools or additional chain saw parts.
Overview: OSROENE Chainsaw Guide Bar Nuts is a 10-piece replacement hardware set marketed for select Stihl, Husqvarna, Craftsman, and Poulan chainsaws, with explicit fit listed for several Stihl MS-series models. The iron build gives it a straightforward, functional look aimed at repair and maintenance use.
Performance: The listed design is focused on simple installation with a wrench, making it practical for replacing worn or missing bar nuts. The product is also described as a good match for original equipment, which is important for proper retention on compatible saws.
Drawbacks: Compatibility is the main limitation, since the fit is not universal and should be checked against the exact chainsaw model before purchase. The provided data also does not include dimensions or thread details, which may make confirmation harder for some buyers.
Verdict: This kit is best for owners of supported chainsaws who want a basic, durable replacement bar nut set in a multi-pack format. It is a sensible pick for maintenance-focused users who value fit and simplicity over extra features.
Pros
- Includes 6 bar nuts, so there are extras available for future replacements.
- Broad compatibility across many listed Stihl MS-series chainsaws.
- Iron construction supports durability and long-term use.
- Easy to install with basic tools.
Cons
- Compatibility is limited to the specific Stihl models listed by the seller.
- No thread size, dimensions, or hardware specifications are provided in the source data.
- This is a replacement nut set only, not a full chainsaw repair kit.
Overview: The OSROENE Chainsaw Bar Nuts are replacement parts for select Stihl chainsaws, sold as a 6-piece set. They are made from iron and are intended to match original equipment as closely as possible for routine bar hardware replacement.
Performance and key features: The main advantage of this set is its straightforward function. If your original bar nuts are worn, damaged, or missing, these parts can restore secure mounting for the chainsaw bar. The brand lists compatibility with many Stihl MS-series saws, and installation is meant to be simple with a wrench.
Drawbacks and considerations: Fitment matters here. These nuts are only suitable for the specific models named in the product data, so buyers should verify compatibility before ordering. The listing also does not provide detailed dimensions or thread specifications, which may be important for exact replacement checks.
Verdict: This is a practical, no-frills replacement option for owners of supported Stihl chainsaws who need extra bar nuts on hand. It makes the most sense for users who want an affordable maintenance part with basic durability and easy installation.
Pros
- Broad compatibility across many STIHL chainsaw models listed by the manufacturer.
- Includes 6 bar nuts, which adds convenience and spare parts value.
- Uses a clear replacement part number for easier identification.
- Suitable for replacing missing or worn sprocket cover hardware.
Cons
- Compatibility depends on matching the exact STIHL model and part number.
- The listing does not provide dimensions, thread details, or material specifications.
- It is a replacement hardware item only and does not include the sprocket cover or other accessories.
Overview: Hao Yuan Star 6pcs Chainsaw Bar Nuts are replacement hardware for STIHL sprocket covers. They are identified by replacement manufacturer part number 0000 955 0804 and are aimed at users who need to replace missing, worn, or damaged bar nuts.
Performance: This set is built for practical maintenance work rather than upgrades. The main appeal is its broad compatibility with many STIHL chainsaws, including several MS series and older model numbers listed in the product data, which makes it a useful repair part for common service needs.
Considerations: Buyers should verify fit carefully before ordering, since the listing does not provide dimensions, thread details, or full construction specifications. It is also important to note that this is only the bar nut replacement set, not a full sprocket cover kit.
Verdict: A solid option for STIHL owners who need a straightforward replacement part and want a few spares on hand. It is best suited to users who already know their saw requires part number 0000 955 0804 or one of the listed compatible models.
Pros
- Includes six bar nuts in one kit for better value and convenience.
- Matches two common OEM reference numbers for easier compatibility checks.
- Covers a long list of Stihl chainsaw and pole saw models.
- Simple parts replacement with no complex components involved.
Cons
- Compatibility still needs to be verified against the exact saw model and OEM part number before ordering.
- This is only a bar nut kit, so it does not include other sprocket cover parts or installation hardware.
- OEM branding is not stated, so buyers seeking genuine Stihl-branded parts may prefer original replacements.
Overview: The REDEEMX Pack 6 M8 Sprocket Cover Bar Nuts Kit is a replacement hardware set for compatible Stihl chainsaws and pole saws. It is intended as a straightforward fix for worn, missing, or damaged bar nuts.
Performance: The kit includes six M8 nuts and cross-references OEM part numbers 0000-955-0801 and 0000-955-0804. It supports a wide range of Stihl MS series saws and several HT pole pruner models, making it a practical spare-part option for routine maintenance.
- Value: Multiple pieces help reduce downtime if a nut is lost or stripped.
- Compatibility: Works with many Stihl chainsaw and pole saw models when the part number matches.
Considerations: This is a parts-only kit, so buyers should confirm the exact model and OEM number before ordering. Because the fit list is broad, it is best for users who already know they need an M8 bar nut replacement.
Verdict: A sensible choice for DIY owners, repair shops, and Stihl users who want a simple replacement nut kit and prefer to keep common spare hardware available.
Stihl Chainsaw Bar Nut Buying Guide
Selecting the correct stihl chainsaw bar nut starts with matching technical requirements rather than brand marketing. The following criteria derive directly from product specifications including pack counts, listed model compatibility, and OEM part cross-references. Applying these filters reduces the chance of purchasing non-fitting hardware that requires returns or temporary workarounds in the field.
Model Compatibility and OEM Cross-Reference
Stihl chainsaws use specific bar nut dimensions that must seat fully against the sprocket cover and bar without play. The majority of listed products target replacement of OEM number 0000 955 0804 or close variants such as 0000 955 0801, covering MS170, MS180, MS200, MS210, MS230, MS250, MS260, MS270, MS280, MS290, MS310, MS360, MS390, MS440, MS460, MS640, MS660 and related C/T variants. Always confirm the exact model list printed on the product packaging against your saw plate before purchase. Products spanning more models reduce inventory needs for users who maintain mixed fleets. For broader category context on Stihl equipment maintenance, consult the full Chainsaws category resources.
Pack Quantity and Cost Efficiency
Bar nuts are low-cost wear items that can strip from over-torquing or corrode in wet storage conditions. Buying multi-packs of 5, 6 or 10 pieces spreads the unit cost and provides immediate spares. A 5-piece pack supports one primary saw plus backups, while a 10-piece kit suits shops servicing multiple units. Evaluate total pieces against the listed price bracket of $3.99 – $9.99 to calculate cost per nut. Higher pack counts from brands such as OSROENE and Hipa typically deliver better long-term value for frequent users without sacrificing listed compatibility.
Thread Size, Flange Design and Material
Most replacements specify M8 threading with a flanged head that distributes clamping force evenly across the bar slot and cover. Steel construction is standard across the evaluated set; look for products that describe solid metal rather than alloyed or coated variants if corrosion resistance in outdoor storage is a priority. Incorrect flange height or diameter can leave the bar under-clamped, accelerating wear on the stud and cover. Cross-check that the product description explicitly lists M8 or the OEM part number match rather than generic “bar nut” wording alone.
Brand Reliability and Multi-Brand Fit
Core suppliers such as Hipa, Tormurbutl, OSROENE, LETAYAR, REDEEMX, Hao Yuan Star and Liofairy dominate the current selection. Several listings also note compatibility beyond Stihl, extending to select Husqvarna, Craftsman and Poulan models that share stud dimensions. This multi-brand reach benefits mixed-equipment users but should be verified against the specific saw model rather than assumed. Brand consistency in pack labeling and part-number accuracy serves as a practical proxy for quality control when formal user ratings remain limited.
Included Accessories and Kit Completeness
Most options are pure nut packs, yet one listing pairs 6 bar nuts with a 13 x 19 mm scrench. The dual-purpose wrench speeds field changes and reduces the need for a separate tool pouch. When kits include tools, confirm the wrench opening matches both the bar nut hex and the spark-plug size common to Stihl models. Pure multi-packs remain preferable for pure inventory restocking, while tool-inclusive kits suit occasional users who want a ready-to-use repair set. Review related maintenance needs in our detailed Stihl MS250 chainsaw overview for complementary part recommendations.
Comparison Table of Representative Options
| Brand | Pack Size | Key Compatibility Notes |
|---|---|---|
| Hipa | 6 pieces | MS170 MS180 MS200 MS210 MS230 MS250 series, replaces 0000 955 0804 |
| Hipa | 5 pieces | MS170 MS180 MS240 MS260 MS271 MS280 MS390 and larger models |
| Tormurbutl | 2 pieces | MS171 MS181 MS192T MS211 MS231 MS251 MS291 MS311 MS361 series |
The table illustrates how pack size and model span trade off. Larger packs from Hipa cover more common homeowner models, while smaller packs allow testing fit before bulk commitment. All fall inside the overall $3.99 – $9.99 observed across the full set of 15 products.
Testing & Selection Methodology
We compared 15 stihl chainsaw bar nut listings by extracting every stated specification: pack quantity, exact Stihl model ranges, OEM part cross-references (primarily 0000 955 0804 and 0000 955 0801), material descriptions, and any included tools. Price positions relative to the observed $3.99 to $9.99 range were calculated on a per-nut basis to identify value outliers. Brand consistency across multiple ASINs and explicit multi-brand notes (Husqvarna, Craftsman, Poulan) were treated as secondary reliability signals. Because formal review counts remain zero on the current data set, selection weight shifted to completeness of compatibility listings and packing efficiency rather than star averages. This specification-first approach surfaces practical differences that matter during installation and long-term vibration resistance.
Products lacking clear model lists or OEM numbers received lower ranking. Kits that combined nuts with a functional scrench earned a utility premium for field readiness. The resulting shortlist favors options that minimize the chance of misfit while maximizing spare availability within typical budget constraints.
Best Picks & Final Verdict
After mapping specifications across the full set, three stand-out choices emerge for distinct buyer needs. Each recommendation stays within the documented data and emphasizes measurable attributes such as piece count and model coverage.
Best Overall Stihl Chainsaw Bar Nut: 6 Pieces Chainsaw Bar Nut for STHIL MS170 MS170C MS180 MS200 MS200T MS210 MS230 MS250 MS260 MS270 017 018 020 020T 021 023 023L 025 by Hipa (ASIN B01DKPYV2E). This pack balances quantity and broad homeowner-model coverage while replacing the common 0000 955 0804 number. It suits users who keep one or two primary saws and want reliable spares without excess inventory.
Best Value / Budget Choice: 5 Pieces MS170 MS180 Sprocket Cover Bar Nut for Sithl Chainsaw Parts MS240 MS260 MS271 MS280 MS390 MS340 MS360 MS440 MS460 MS640 MS660 by Hipa (ASIN B0DMVHBL2K). Positioned at the lower end of $3.99 – $9.99, it still spans both compact and larger professional models, delivering the lowest cost-per-nut among multi-packs while maintaining clear OEM cross-reference.
Best for Field Service Kits: 13 x 19 mm Chainsaw Wrench Scrench and ms170 6PCS bar nuts compatible Replace Stihl ms170 ms180 ms250 ms290 017 018 019 020 021 023 024 025 026 028 034 by Liofairy (ASIN B09X72NKDF). The inclusion of a dual-size scrench alongside six nuts creates a self-contained repair package ideal for truck boxes or remote job sites. Users who already maintain MS250-class saws will find this pairing especially practical; further saw-level details appear in our Stihl MS250 expert review and buying guide.
Any of the three will restore secure bar clamping when installed to manufacturer torque values. Choose based on the number of saws owned and whether a wrench is already available.
Frequently Asked Questions
What size thread does a typical Stihl stihl chainsaw bar nut use?
Most Stihl bar nuts use M8 threading with a flanged head designed to seat against the guide bar and sprocket cover. Confirm the product lists M8 or the OEM number 0000 955 0804 before ordering to guarantee fit on MS-series saws.
How many stihl chainsaw bar nut should I keep as spares?
A minimum of two to four extras per saw is practical because nuts can strip or go missing during bar changes. Multi-packs of five or six pieces cover one primary machine plus immediate backups without large storage demands.
Do aftermarket stihl chainsaw bar nut fit both Stihl and Husqvarna saws?
Several products explicitly note shared dimensions with select Husqvarna, Craftsman and Poulan models. Always match the exact model list rather than assuming interchangeability, then verify fit on the stud before full torque.
How do I properly install a replacement stihl chainsaw bar nut?
Clean the stud threads, seat the bar and cover, then thread the nut by hand before applying moderate wrench torque. Avoid overtightening that can crush the flange or strip the stud. A scrench of the correct hex size simplifies the process in the field.
Where can I find more Stihl chainsaw maintenance advice?
Additional model-specific guidance and part recommendations appear throughout our Chainsaws category collection, covering everything from bar and chain selection to routine hardware checks.
