Mandrel 3/8-16 Thread Size - 3M - Marson

The 3M – Marson 39260 Mandrel is a professional-grade replacement component engineered for the precise and secure installation of 3/8-16 rivet nuts and threaded inserts. Designed for demanding automotive and industrial applications, this mandrel ensures consistent fastening when paired with compatible Marson rivet nut installation tools.

Key Features

• Optimized for 3/8-16 Threaded Inserts: Specifically sized to accurately install standard 3/8-16 rivet nuts into various materials, including steel, aluminum, and composites, ensuring proper thread formation.
• Direct-Fit Marson Compatibility: Engineered as a service replacement mandrel, this component integrates seamlessly with compatible Marson rivet nut tools, restoring optimal function and precision.
• Professional-Grade Durability: Manufactured to withstand the frequent cycling and rigorous operational demands typical of automotive repair, fleet maintenance, and heavy industrial environments.
• Accurate and Consistent Installation: Facilitates precise pull-up of rivet nuts, which is crucial for achieving the correct grip range and maintaining long-term joint integrity in critical applications.
• Smooth Tool Engagement: Features precision-machined shank and threads designed to promote consistent engagement with both the installation tool and the insert, minimizing instances of mis-installs.

Applications

The 3M – Marson 39260 Mandrel is essential for creating robust, load-bearing 3/8-16 threads in thin-gauge materials across numerous professional settings:

• Installing 3/8-16 rivet nuts in body panels, structural components, and brackets during automotive repair, vehicle upfitting, and customization projects.
• Establishing secure threaded attachment points in sheet metal, plastics, and composite panels for light-, medium-, and heavy-duty vehicles.
• Performing routine service and maintenance on Marson rivet nut tools when the original mandrel exhibits wear or damage.
• Supporting fabrication and repair work on industrial machinery, equipment enclosures, and shop fixtures that require reliable 3/8-16 threaded inserts.

Specifications

• Manufacturer: 3M – Marson
• Model Number: 39260
• Thread Size: 3/8-16
• Weight: 0.2 lb
• Dimensions: 5" L x 0.5" W x 0.5" H