Genuine STIHL Collar Nut M14 x 1.5 LH Thread – 4005 713 6800

The Genuine STIHL Collar Nut M14 x 1.5 Left-Hand Thread (4005 713 6800) is a heavy-duty OEM fastener designed to securely retain cutting heads on compatible STIHL brushcutters and clearing saws. Engineered to match STIHL specifications, this collar nut provides a tight, vibration-resistant hold for high-load mowing heads, ensuring safe and reliable operation during demanding cutting tasks.

Featuring a left-hand thread, this nut is designed to work with the rotation of the cutting head, helping prevent loosening during use. Manufactured from durable steel, it is built to withstand repeated fitting, removal and exposure to outdoor conditions, making it an essential replacement part for maintaining correct head retention and machine performance.

Key Features

• Genuine STIHL part for correct fit and dependable performance
• OEM part number 4005 713 6800
• M14 x 1.5 left-hand thread for secure fastening under rotation
• Durable steel construction for strength and long service life
• Designed for securing STIHL cutting heads and attachments
• Precision thread profile for smooth installation and reliable clamping
• Helps prevent loosening during high-speed operation
• Suitable for routine maintenance and replacement

Designed for Secure Cutting Head Retention

This STIHL collar nut is designed to maintain a firm and stable connection between the machine shaft and cutting head. The left-hand thread ensures that the nut tightens under operational rotation, helping prevent accidental loosening and supporting safe, consistent performance.

Durable OEM Construction for Demanding Use

Manufactured to original STIHL standards, this collar nut is built from robust steel to withstand vibration, load and repeated servicing. Its durable construction ensures reliable fastening performance in demanding landscaping, forestry and ground maintenance environments.

Compatibility and Application

The STIHL Collar Nut M14 x 1.5 LH is used to secure larger mowing heads and cutting attachments on compatible STIHL brushcutters and clearing saws. It is ideal for replacing worn, damaged or missing nuts to restore safe operation and correct attachment fitment.

Technical Specifications

Compatible Models

Fits STIHL cutting heads including:

AutoCut 40-4, PolyCut 41-3.

Ideal For

• Replacing worn or missing collar nuts
• Securing brushcutter and trimmer cutting heads
• Routine servicing and attachment maintenance
• Maintaining safe and secure machine operation
• Professional landscaping and grounds maintenance use

Best For

The STIHL Collar Nut M14 x 1.5 LH is best for users maintaining compatible STIHL brushcutters who need a genuine replacement fastener to ensure secure cutting head retention and safe operation.

Why Choose the STIHL Collar Nut M14 x 1.5 LH?

Choosing a genuine STIHL fastener ensures correct thread fit, strength and durability. This collar nut is a reliable OEM solution for maintaining secure cutting head attachment and consistent performance in demanding working conditions.

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