Description
Overview:
This Self-Tapping Screw 3.9 x 13 is a Genuine Stihl part designed for securing small assemblies and housings on Stihl chainsaws. Made from durable metal for strength and reliability, it forms its own thread in the mating material for a firm hold. The screw measures 13 mm in length (approx. 0.51 inches) with a 3.9 mm diameter (approx. 0.15 inches), giving the correct bite and grip for common chainsaw bodywork and covers. It is suitable for use on Stihl models including the 009 and 012, helping maintain correct fitment under vibration and regular use. Supplied as OEM with Stihl part number 9099 374 2770, it supports consistent maintenance results and dependable reassembly of service parts.
Key Features:
- Genuine Stihl OEM part for assured compatibility and quality (MPN: 9099 374 2770)
- Size: 3.9 mm diameter x 13 mm length (0.15 in x 0.51 in) for accurate fit
- Self-tapping thread creates its own mating thread for quick, secure fastening
- Durable metal construction suited to the vibration and loads of chainsaw use
- Helps keep covers, housings, and small components securely in place
- Reliable retention to reduce loosening during operation and maintenance cycles
- Suitable for Stihl chainsaws in the same size range, including 009, 010, 011, 012
- Straightforward replacement during routine servicing and repairs
- Supports stable alignment of parts to preserve performance and safety
Typical Applications:
Used for fastening plastic or thin metal components on Stihl chainsaws, such as body panels, air filter housings, control covers, handle sections, and similar small assemblies. Ideal where a self-tapping thread is required to restore or maintain a secure fit after servicing.
Also known as:
Self-threading screw, tapping screw, thread-forming screw, self-tapper, small machine fastener, chainsaw body screw.
Fits Models:
009, 010, 011, 012
Alternate Part Numbers:
9099-374-2770, 90993742770
