Description
Overview:
This Woodruff Key 3 x 5.5 mm is a genuine Stihl OEM part designed for secure, accurate location of rotating components on heavy-duty machines such as the Stihl 090 and 090G. Manufactured from steel with a half‐moon profile, it fits precisely into the shaft keyway to prevent slippage, maintain timing, and protect mating parts under load. The compact 3 x 5.5 mm size suits the specified Stihl applications, helping ensure smooth engine and drive operation with consistent alignment. As a Genuine Part, it offers assured compatibility and dependable performance for professional users and DIY owners who need reliable, long-lasting spares for maintenance and repair work on large Stihl chainsaws and related equipment.
Key Features:
- Genuine Stihl OEM part for assured fit and performance
- Steel construction for strength and long service life
- Precise 3 x 5.5 mm sizing for correct seating in the keyway
- Half‐moon profile provides positive drive and accurate timing
- Helps prevent flywheel or sprocket slippage under load
- Supports smooth running by maintaining component alignment
- Simple to install during routine servicing or rebuilds
- Suitable for professional and domestic maintenance tasks
Typical Applications:
Used to locate and secure components such as flywheels, drive sprockets, and pulleys on the crankshaft or other rotating shafts. Commonly applied during engine rebuilds, flywheel refits, ignition timing checks, and when replacing drive components on large Stihl chainsaws. Helps restore reliable drive engagement and reduces the risk of damage caused by misalignment or slippage.
Also known as:
Woodruff key, half‐moon key, shaft key, machine key, semicircular key. Frequently referenced as a flywheel key in small engine contexts, and used wherever a semicircular key is required to lock a hub or pulley to a keyed shaft while allowing accurate assembly and timing.
Fits Models:
070, 090, 090G, MS 720, MS720
Alternate Part Numbers:
9482-435-0430, 94824350430
