Description
Overview:
This Self‐Tapping Screw 3.9x19 is a genuine Stihl OEM fastener designed for secure assembly across a wide range of Stihl machines, including the 042AV and FC44. Made from durable steel, it forms its own mating thread as it is driven, giving a firm hold without a pre‐drilled pilot in suitable materials. The compact size makes it ideal for covers, housings and light structural fixings commonly found on handheld outdoor power equipment. Dimensions are 3.9 mm diameter x 19 mm length (approx. 0.15 in x 0.75 in). Specified by Stihl under part number 9099 021 2810, it supports reliable maintenance and repairs, helping restore original fit and performance while reducing the chance of loose fixings under vibration. Genuine Part for assured compatibility and consistency.
Key Features:
- Genuine OEM Stihl part for correct fit and reliable performance
- Size: 3.9 mm diameter x 19 mm length (approx. 0.15 in x 0.75 in) for common Stihl assemblies
- Self‐tapping thread creates its own mating thread; no pre‐drilling needed in suitable substrates
- Durable steel construction for repeated fitting and removal in demanding environments
- Helps resist loosening from vibration typical of chainsaws, brushcutters and augers
- Suitable for plastics and light alloy housings used on many Stihl machines
- Smooth drive‐in and removal to reduce risk of cross‐threading or stripping
- Matches Stihl reference 9099 021 2810 for straightforward identification
Typical Applications:
Fastening covers, shrouds, air filter boxes, recoil starter housings, guards and handle assemblies on Stihl chainsaws, brushcutters, trimmers and earth augers. Useful for replacing worn or missing fixings during routine servicing, component replacement or refurbishment where a compact, secure self‐tapping screw is specified.
Also known as:
Tapping screw, thread‐forming screw, thread‐cutting screw, ST screw, self‐thread screw, metal/plastic housing screw, equipment fastener for outdoor power tools.
Fits Models:
028, 028AV, 036QS, 042 AV, 042AV, 048, 066, 084, BT 360, BT360, E10, E15, FC 44, FC44, FS36, FS38, FS40, FS44, FS45, FS45C, FS45L, FS46, FS46C, FS50, FS55, FS55C, FS55R, FS55RC, FS55T, MS360, MS360C
Alternate Part Numbers:
9099-021-2810, 90990212810
Product Specifications
| L&S Part No. | 9099 021 2810 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 90990212810 |
| Unit of Sale | 1 |
| Applications | 028, 028AV, 036QS, 042 AV, 042AV, 048, 066, 084, BT 360, BT360, E10, E15, FC 44, FC44, FS36, FS38, FS40, FS44, FS45, FS45C, FS45L, FS46, FS46C, FS50, FS55, FS55C, FS55R, FS55RC, FS55T, MS360, MS360C |
| Machine Type | Brushcutters, Chainsaws, Earth Augers |
| Fits Models | 028, 028AV | MS360, MS360C | FS36, FS40, FS44 | FS38, FS45, FS46 | FS40, FS50 | FS55, FS55C, FS55R | 036QS | 042 AV | 048 | 084 | E15 | 066 | FC 44 | BT 360 |
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