Description
Overview:
The Self-Tapping Screw 2.9x25 is a genuine Stihl fastener designed for reliable assembly and repair across a wide range of handheld machines. Made from tough steel, it forms its own mating thread as it is driven, giving a secure hold in plastics and light alloys commonly found in housings and covers. Sized at 2.9 mm diameter x 25 mm length (approx. 0.11 in x 0.98 in), it provides a neat OEM fit where specified. Suitable for many Stihl tools including the FS160 and FS180, it helps maintain structural integrity under vibration and regular use. Manufacturer Part Number (MPN): 9099 021 1890. Being a Genuine Stihl part ensures consistent quality, correct tolerances, and dependable compatibility with the intended applications.
Key Features:
- Genuine Stihl part for exact fit and reliable performance in OEM-specified locations
- Self-tapping thread cuts into plastics and light metals for a firm, lasting hold
- 2.9 mm x 25 mm size (approx. 0.11 in x 0.98 in) for precise replacement where this spec is required
- Steel construction for durability under vibration and repeated maintenance cycles
- Helps prevent loosening with proper torque and correct pilot size where applicable
- Clean, repeatable installation without the need for pre-cut threads in many applications
- Supports efficient repairs by matching original length and diameter, reducing risk of damage to housings
Typical Applications:
Ideal for securing engine shrouds, fan housings, guard plates, handle assemblies, gearcase covers, switch plates, and other light structural or cosmetic covers on Stihl brushcutters, clearing saws, hedge trimmers, and earth augers. Suitable wherever a 2.9 mm x 25 mm self-tapping screw is specified for plastics or thin metal components.
Also known as:
Self-tapper, self-threading screw, tapping screw, sheet metal screw, drill screw. Commonly used as an OEM fastener for covers and housings in small engine equipment.
Fits Models:
BT106, FS106, FS108, FS160, FS180, FS220, FS220K, FS280, FS280K, FS290, FS36, FS360, FS360C, FS40, FS410C, FS420, FS420L, FS44, FS50, FS55, FS55C, FS55R, FS62, FS66, FS72, FS74, FS75, FS76, FS80, FS80R, FS81, FS85, FS85R, FS85RX, FS85T, FS86, FS88, FS96, HS72, HS74, HS75, HS76, HS80, HS85
Alternate Part Numbers:
9099-021-1890, 90990211890
Product Specifications
| L&S Part No. | 9099 021 1890 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 90990211890 |
| Unit of Sale | 1 |
| Applications | BT106, FS106, FS108, FS160, FS180, FS220, FS220K, FS280, FS280K, FS290, FS36, FS360, FS360C, FS40, FS410C, FS420, FS420L, FS44, FS50, FS55, FS55C, FS55R, FS62, FS66, FS72, FS74, FS75, FS76, FS80, FS80R, FS81, FS85, FS85R, FS85RX, FS85T, FS86, FS88, FS96, HS72, HS74, HS75, HS76, HS80, HS85 |
| Machine Type | Brushcutters, Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | FS36, FS40, FS44 | FS40, FS50 | FS55, FS55C, FS55R | FS75, FS80, FS85 | FS220, FS280, FS290 | FS360C FS410C | HS72, HS74, HS76 | HS75 | FS62, FS66 | FS72, FS74, FS76 | FS81, FS86 | FS88 | FS96 | FS106 | FS108 | FS160, FS180 | FS360, FS420, FS420L (older models) | HS85 |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
Related Products
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
