Marson M47950 Threaded Insert 1/4-20 0.51 Inch Aluminum

Product Description

The MARSON M47950 is an aluminum Thread-Sert threaded insert designed to create strong, reliable internal threads in materials that cannot accept a standard tapped thread on their own. With a 1/4-20 thread size and an overall length of 0.51 inches, this insert is installed into a pre-drilled hole and provides a permanent, load-bearing thread for fastener engagement. The 0.391-inch hole diameter and 0.408-inch head diameter allow precise fitment in thin-gauge or soft-material substrates. Installation is performed by HVAC technicians, electricians, sheet metal workers, and general maintenance trades working with panels, brackets, and enclosures.

Thread-Sert inserts are commonly used in residential and light commercial applications where base materials such as aluminum sheet, thin steel, or composite panels do not offer sufficient thread engagement for standard machine screws. They are well suited for panel assembly, equipment enclosures, electrical boxes, and structural brackets where a secure, reusable threaded connection is required. This insert is sold in a package quantity of 50, making it appropriate for both single-job use and ongoing service inventory.

Key Features

• 1/4-20 thread size for compatibility with standard machine screws and fasteners
• 0.51-inch overall length provides solid thread engagement in thin material
• 0.391-inch installation hole diameter for accurate pre-drill sizing
• 0.408-inch head diameter seats flush against the workpiece surface
• Aluminum construction resists corrosion and reduces weight in the assembly
• Package quantity of 50 supports production and repeat service work

Compatibility

Designed as an OEM-style replacement and general-use threaded insert for applications requiring new 1/4-20 internal threads in thin or soft-material substrates.

Installation Notes

Thread-Sert inserts are installed by trade professionals using a mandrel-style or pull-to-set installation tool matched to the insert thread size. The base material must be pre-drilled to the specified 0.391-inch hole diameter before insert installation. Always de-energize or de-pressurize any system before working on panels or enclosures that house live electrical or mechanical components. Follow applicable codes and equipment manufacturer guidelines for fastener torque and panel integrity after insert installation.