Description
Overview:
This genuine Stihl Collar Nut with M14 x 1.5 left‐hand thread is a steel fastener designed to secure high‐load cutting heads on professional brushcutters and clearing saws. It provides a tight, reliable hold for Stihl mowing heads such as AutoCut 40-4 and PolyCut 41-3, helping prevent loosening during operation. The left‐hand thread matches the rotation of the head to resist unscrewing, supporting safe and consistent performance. Built for repeated fitting and removal during routine maintenance, the nut's robust construction withstands vibration and outdoor use. Suitable for both trade and DIY users, it is the correct specification for machines that require an M14 x 1.5 left‐hand fixing, ensuring proper compatibility when replacing worn or missing hardware on Stihl cutting attachments.
Key Features:
- Genuine Stihl OEM part for assured fit and performance
- M14 x 1.5 left‐hand thread prevents loosening under rotation
- Steel construction for strength and long service life
- Designed for Stihl cutting heads, including AutoCut 40-4 and PolyCut 41-3
- Precision threads for smooth installation and secure clamping
- Supports safe operation by keeping the mowing head firmly seated
- Suitable for regular maintenance and straightforward replacement
- Compatible with standard workshop spanners/sockets (check tool size on your machine)
- Matches Stihl specifications to help protect shafts and attachments
Typical Applications:
Used to fasten and retain large trimmer and brushcutter heads on compatible Stihl machines. Ideal for securing mowing heads after line changes or head replacement, and for bringing machines back into service where the original nut is worn, damaged, or missing. Common in grounds maintenance, landscaping, site clearance, and agricultural upkeep where dependable head retention is essential.
Also known as:
Left‐hand nut, LH thread nut, reverse‐thread nut, collar nut, M14 x 1.5 nut, threaded fastener for mowing heads, retaining nut for brushcutter/trimmer heads.
Fits Models:
AutoCut 40-4
AutoCut40-4
PolyCut 41-3
PolyCut41-3
Alternate Part Numbers:
4005-713-6800, 40057136800
Product Specifications
| L&S Part No. | 4005 713 6800 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 40057136800 |
| Unit of Sale | 1 |
| Applications | AutoCut 40-4, AutoCut40-4, PolyCut 41-3, PolyCut41-3 |
| Machine Type | Trimmers, Brushcutters |
| Fits Brands | Stihl |
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