Description
Overview:
Washer 4.3 is a genuine Stihl steel washer used to secure fasteners and protect mating surfaces on a wide range of Stihl equipment, including pressure washers and handheld tools. It is engineered for reliable load spreading and to help prevent bolt or nut loosening under vibration. Made from durable steel with a corrosion‐resistant finish, it offers dependable service in outdoor and workshop conditions. The 4.3 designation refers to an inner diameter of 4.3 mm, commonly paired with M4 fasteners for clearance. This OEM part (Stihl 9291 021 0100) is suitable for many machines such as the RE521 and RE551, supporting routine maintenance and repair where a small, consistent, and precise washer is required. Genuine Stihl part for assured fit and performance.
Key Features:
- Genuine Stihl OEM washer (9291 021 0100) for precise fit and compatibility
- 4.3 mm inner diameter for common M4 clearance applications
- Steel construction with corrosion‐resistant plating for long service life
- Distributes clamping load to protect housings, guards, and covers
- Helps resist loosening on high‐vibration tools and engines
- Smooth faces reduce galling and surface damage during tightening
- Compact, easy to install, and straightforward like‐for‐like replacement
- Suitable across many Stihl machines for consistent maintenance practice
Typical Applications:
Used wherever an M4 fastener needs a stable bearing surface, including handles, shrouds, fan housings, ignition modules, pump frames, and accessory brackets. Common on chainsaws, brushcutters, hedge trimmers, blowers, cut‐off saws, pressure washers, and vacs. Ideal for service tasks such as refitting covers, securing guards, and reassembling engine and pump components after inspection or repair.
Also known as:
Flat washer, plain washer, M4 washer, clearance washer, load‐spreading washer, round metal washer, repair washer (thin), shim washer.
Fits Models:
028, 028AV, 056, 08S, AB 4080 S, AB 4099 SE, AB4080S, AB4099SE, BG56, BG56C, BG60, BG61, BG66, BG86, BR200, BT 130, BT 130 Z, BT 131, BT 360, BT130, BT130Z, BT131, BT360, FC 100, FC 111, FC 44, FC 56, FC 70, FC 70 C, FC 90, FC 91, FC100, FC111, FC44, FC56, FC70, FC70C, FC90, FC91, FC95, FC96, FR130T, FR131T, FR230, FR230T, FR410C, FR460TC, FS100, FS100R, FS100RX, FS110, FS110R, FS110RX, FS110X, FS111, FS111R, FS111RX, FS120, FS130, FS130R, FS131, FS131R, FS150, FS151, FS20, FS200, FS202, FS230, FS240, FS250, FS260, FS310, FS311, FS36, FS360, FS360C, FS40, FS410AV, FS410C, FS420, FS420L, FS44, FS460C, FS460RC, FS490C, FS50, FS500, FS51, FS510C, FS550, FS550L, FS56, FS560C, FS56C, FS56R, FS60, FS61, FS65, FS70C, FS70R, FS70RC, FS75, FS80, FS81, FS83, FS83T, FS85, FS86, FS89, FS89R, FS90, FS90R, FS91, FS91R, FS94, FS94 C, FS94C, FS94R, FS94RC, FS96, HL 95, HL 95 K, HL100, HL100K, HL56K, HL90, HL90K, HL91K, HL91KC, HL92C, HL92KC, HL94, HL94C, HL94K, HL94KC, HL95, HL95K, HS 46, HS46, HS46 C, HS46C, HS56, HS60, HS61, HS81, HS82, HS86, HS87, HT101, HT102, HT103, HT130, HT131, HT132, HT133, HT135, HT56 C, HT56C, HT70, HT70K, HT73, HT75, KM100, KM100R, KM110R, KM111R, KM130, KM130R, KM131, KM131R, KM56C, KM56RC, KM90, KM90R, KM91R, KM94R, KM94RC, MM 56 MultiSystem, MM56MultiSystem, MS150C, MS150T C, MS150TC, MS151C, MS151TC, MS162, MS162 / MS162C, MS162C, MS170, MS170C, MS171, MS171C, MS172, MS172 / MS172C, MS172C, MS180, MS180C, MS181, MS181C, MS192C, MS192T, MS192TC, MS193C, MS193T, MS193TC, MS194T, MS194T / MS194TC, MS194TC, MS211, MS211C, MS231, MS241C, MS251, MS270, MS270C, MS271, MS271C, MS280, MS280C, MS291, MS291C, MS311, MS391, MSA300, MSA300 / MSA300C, MSA300C, MT 640, MT 680, MT 740, MT 745, MT 780, MT 785, MT 785 S, MT 790, MT 795, MT640, MT680, MT740, MT745, MT780, MT785, MT785S, MT790, MT795, P835, P840, RB 400 K, RB400K, RE 101K, RE 400 K, RE 401 K, RE101K, RE400K, RE401K, RE521, RE551, RE551 PLUS, RE551PLUS, RE581, RE661, RE961, SE100, SE200, SE201, SE202, SG17, SG17L, SH56, SH86, SR 200, SR 200-D, SR 200-Z, SR200, SR200-D, SR200-Z, SR200D, SR200Z, TS350, TS360, USG
Alternate Part Numbers:
9291-021-0100, 92910210100
Product Specifications
| L&S Part No. | 9291 021 0100 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 92910210100 |
| Unit of Sale | 1 |
| Applications | 028, 028AV, 056, 08S, 2000), AB 4080 S, AB 4099 SE, AB4080S, AB4099SE, BG56, BG56C, BG60, BG61, BG66, BG86, BR200, BT 130, BT 130 Z, BT 131, BT 360, BT130, BT130Z, BT131, BT360, FC 100, FC 111, FC 44, FC 56, FC 70, FC 70 C, FC 90, FC 91, FC100, FC111, FC44, FC56, FC70, FC70C, FC90, FC91, FC95, FC96, FR130T, FR131T, FR230, FR230T, FR410C, FR460TC, FS100, FS100R, FS100RX, FS110, FS110R, FS110RX, FS110X, FS111, FS111R, FS111RX, FS120, FS130, FS130R, FS131, FS131R, FS150, FS151, FS20, FS200, FS202, FS230, FS240, FS250, FS260, FS310, FS311, FS36, FS360, FS360C, FS40, FS410AV, FS410C, FS420, FS420L, FS44, FS460C, FS460RC, FS490C, FS50, FS500, FS51, FS510C, FS550, FS550L, FS56, FS560C, FS56C, FS56R, FS60, FS61, FS65, FS70C, FS70R, FS70RC, FS75, FS80, FS81, FS83, FS83T, FS85, FS86, FS89, FS89R, FS90, FS90R, FS91, FS91R, FS94, FS94 C, FS94C, FS94R, FS94RC, FS96, HL 95, HL 95 K, HL100, HL100K, HL56K, HL90, HL90K, HL91K, HL91KC, HL92C, HL92KC, HL94, HL94C, HL94K, HL94KC, HL95, HL95K, HS 46, HS46, HS46 C, HS46C, HS56, HS60, HS61, HS81, HS82, HS86, HS87, HT101, HT102, HT103, HT130, HT131, HT132, HT133, HT135, HT56 C, HT56C, HT70, HT70K, HT73, HT75, KM100, KM100R, KM110R, KM111R, KM130, KM130R, KM131, KM131R, KM56C, KM56RC, KM90, KM90R, KM91R, KM94R, KM94RC, MM 56 MultiSystem, MM56MultiSystem, MS150C, MS150T C, MS150TC, MS151C, MS151TC, MS162, MS162 / MS162C, MS162C, MS170, MS170C, MS171, MS171C, MS172, MS172 / MS172C, MS172C, MS180, MS180C, MS181, MS181C, MS192C, MS192T, MS192TC, MS193C, MS193T, MS193TC, MS194T, MS194T / MS194TC, MS194TC, MS211, MS211C, MS231, MS241C, MS251, MS270, MS270C, MS271, MS271C, MS280, MS280C, MS291, MS291C, MS311, MS391, MSA300, MSA300 / MSA300C, MSA300C, MT 640, MT 680, MT 740, MT 740 (1999, MT 745, MT 780, MT 785, MT 785 S, MT 790, MT 795, MT640, MT680, MT740, MT745, MT780, MT785, MT785S, MT790, MT795, P835, P840, RB 400 K, RB400K, RE 101K, RE 400 K, RE 401 K, RE101K, RE400K, RE401K, RE521, RE551, RE551 PLUS, RE551PLUS, RE581, RE661, RE961, SE100, SE200, SE201, SE202, SG17, SG17L, SH56, SH86, SR 200, SR 200-D, SR 200-Z, SR200, SR200-D, SR200-Z, SR200D, SR200Z, TS350, TS360, USG |
| Machine Type | Pressure Washers, Backpack Blowers, Chainsaws, Brushcutters, Pole Pruners, Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | TS350, TS360 | MS170, MS170C | MS180, MS180C | MS270, MS270C, MS280, MS280C | 028, 028AV | MS192C, MS192T, MS192TC | 08S | MS171, MS171C | MS181, MS181C | MS211, MS211C | FS36, FS40, FS44 | FS40, FS50 | FS56, FS56C, FS56R | FS75, FS80, FS85 | FS83, FS83T | FS90, FS90R | FS100, FS110 | FS120, FS200, FS250 | FS130, FS130R | FS240, FS260 | FS310 | FS360C FS410C | FS460C, FS460RC | FS500, FS550, FS550L | BG56 | MS150T C | HS 46, HS46 C | HS60, HS61 | HS81, HS86 | HS82 | BG60, BG61 | BG66 | BG86 | BR200 | SH56, SH86 | FS50, FS51 | FS60 | FS61 | FS65 | FS70C, FS70R, FS70RC | FS80 | FS81, FS86 | FS91, FS91R | FS94, FS94 C, FS94R, FS94RC | FS96 | FS111, FS111R, FS111RX | FS131, FS131R | FS150, FS151 | FS20 | FS200, FS202 | FS311 | FS360, FS420, FS420L (older models) | FS410AV (old model) | FS490C, FS510C, FS560C | FR130T | FR131T | FR230, FR230T | FR410C, FR460TC | MS231, MS251 | MS241C | MS271, MS271C, MS291, MS291C | MS311 | MS391 | MS150C | 056 | FS89, FS89R | HT56 C | HT70, HT70K, HT75 | HT73 | FS230 | HT101 | HT102, HT103 | HT130 | HT131 | HT132, HT133 | MS193C, MS193T, MS193TC | KM56C, KM56RC | KM90, KM90R | KM91R | KM94R, KM94RC | KM100, KM100R, KM110R | KM111R Engines | KM130, KM130R | KM131, KM131R | MM 56 MultiSystem | FC 44 | FC 56 | FC 70, FC 70 C | FC 90, 95 | FC 100 | FC 111 | SR 200 | SR 200-D | SR 200-Z | SG17, SG17L | BT 130 | BT 131 | BT 360 | BT 130 Z | P835, P840 | FC 91, 96 | RE521, RE551, RE581, RE551 PLUS | RE661, RE961 | SE100, SE200, SE201, SE202 | RE 400 K, RE 401 K, RB 400 K | HL56K | HL90K, HL90, HL95K | HL91K, HL91KC | HL92C, HL92KC | HL94, HL94C, HL94K, HL94KC | HL100, HL100K | MT 640 (1996) | MT 640 (1997) | MT 680 | MT 745 | MT 785 | MT 740 | MT 780 | MT 780 (1999) | MT 785 S | MT 740 (1999, 2000) | MT 790 | MT 795 | AB 4080 S | AB 4099 SE | MS151C, MS151TC | MS194T / MS194TC | USG | HS56 | HS87 | HL 95, HL 95 K | HT135 | MS162 / MS162C | MS172 / MS172C | RE 101K | MSA300 / MSA300C | MS212 / MS212C | FS361C | FS411 C-EM | FS461 C-EM | FS491 C-EM | FS561 C-EM | MS182 / MS182C | HT134 | MC 200 | HOS | USG | FS461 C-EML |
