Description
Overview:
The Spline Screw IS‐M5x10 is a genuine Stihl fastener designed for secure assembly on a wide range of handheld power tools. Made from high‐quality steel with a corrosion‐resistant zinc finish, it uses an internal spline (Torx‐style) drive for positive engagement and reduced cam‐out. Sized M5 x 10 mm, it is suited to compact assemblies where a precise, durable fixing is required. It helps maintain the integrity of housings, guards and attachments, keeping components aligned under vibration. This screw is a direct replacement under OEM Part No. 9022 399 0950 and is commonly specified on models such as the Stihl FS400 and FS450. As a genuine Stihl part, it supports consistent performance and reliable service life in demanding conditions.
Key Features:
- Genuine Stihl OEM fastener (9022 399 0950) for assured fit and function
- Internal spline (Torx‐style) drive for secure torque transfer and reduced slippage
- M5 x 10 mm machine screw for tight, space‐limited assemblies
- Tough steel with zinc plating to resist wear and corrosion in outdoor use
- Accurate manufacturing tolerances to help prevent loosening under vibration
- Suitable for trimmers, brushcutters, blowers and Kombi tools across the Stihl range
- Straightforward to install with the correct spline bit; minimises risk of head damage
- Reliable replacement for maintenance, refurbishment and OEM‐spec repairs
Typical Applications:
Fastening shrouds, starter housings, handle frames, gearcase or clutch covers, guard brackets and accessory mounting points on Stihl equipment. Ideal for replacing worn or missing fixings during routine servicing, ensuring components remain correctly aligned and secure in high‐vibration environments where dependable retention is essential.
Also known as:
Internal spline screw, Torx screw, star‐drive screw, M5 machine screw, M5x10 screw, fixing screw, cap screw, Stihl fixing, OEM fastener.
Fits Models:
044, 046, BGA85, FC 100, FC 111, FC 56, FC 70, FC 70 C, FC 90, FC 91, FC100, FC111, FC56, FC70, FC70C, FC90, FC91, FC95, FC96, FCB-KM, FCBKM, FCS-KM, FCSKM, FS160, FS180, FS220, FS220K, FS240, FS240C, FS240RC, FS260, FS260C, FS260RC, FS280, FS280K, FS290, FS300, FS310, FS311, FS350, FS360C, FS38, FS380, FS400, FS410C, FS45, FS450, FS45C, FS45L, FS46, FS460C, FS460RC, FS46C, FS480, FS490C, FS510C, FS55, FS55C, FS55R, FS55RC, FS55T, FS560C, KM55, KM55C, KM55R, KM55RC, MM 55, MM 55 C MultiSystem, MM55, MM55CMultiSystem, MS241C, MS440, MS460, MS461, MS462, MS462C
Alternate Part Numbers:
9022-399-0950, 90223990950
Product Specifications
| L&S Part No. | 9022 399 0950 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 90223990950 |
| Unit of Sale | 1 |
| Applications | 044, 046, BGA85, FC 100, FC 111, FC 56, FC 70, FC 70 C, FC 90, FC 91, FC100, FC111, FC56, FC70, FC70C, FC90, FC91, FC95, FC96, FCB-KM, FCBKM, FCS-KM, FCSKM, FS160, FS180, FS220, FS220K, FS240, FS240C, FS240RC, FS260, FS260C, FS260RC, FS280, FS280K, FS290, FS300, FS310, FS311, FS350, FS360C, FS38, FS380, FS400, FS410C, FS45, FS450, FS45C, FS45L, FS46, FS460C, FS460RC, FS46C, FS480, FS490C, FS510C, FS55, FS55C, FS55R, FS55RC, FS55T, FS560C, KM55, KM55C, KM55R, KM55RC, MM 55, MM 55 C MultiSystem, MM55, MM55CMultiSystem, MS241C, MS440, MS460, MS461, MS462, MS462C |
| Machine Type | Brushcutters, Trimmers |
| Fits Brands | Stihl |
| Fits Models | MS440 | MS460 | FS38, FS45, FS46 | FS55, FS55C, FS55R | FS220, FS280, FS290 | FS240, FS260 | FS300, FS350, FS380 | FS310 | FS360C FS410C | FS400, FS450, FS480 | FS460C, FS460RC | BGA85 | FS160, FS180 | FS311 | FS490C, FS510C, FS560C | MS241C | MS461 | MS462, MS462C | 044 | 046 | KM55, KM55C, KM55R, KM55RC | FCB-KM | FCS-KM | MM 55, MM 55 C MultiSystem | FC 56 | FC 70, FC 70 C | FC 90, 95 | FC 100 | FC 111 | FC 91, 96 |
