80/20 Inc. 3381 Extrusion End Fastener Series 10

Product Description

The 80/20 INC. 3381 is a zinc extrusion end fastener designed for use with Series 10 aluminum extrusion profiles. It secures into the open end of a Series 10 extrusion channel, using a button head socket cap screw to pull components tight and prevent the mating profile from rotating during assembly. The fastener measures 0.937 inches in length and 0.431 inches in width, with a depth of 0.75 inches, making it a compact hardware solution for modular framing builds. Thread size is 1/4-20. This part is installed by fabricators, machine builders, and industrial assembly technicians working with T-slot framing systems.

This fastener is suited for light-duty to moderate-strength end connections in modular aluminum framing applications. It is commonly used in workstations, machine guards, material handling fixtures, and structural frames built on the Series 10 T-slot extrusion platform. The clip design resists rotation of the mating profile, maintaining alignment under load. This fastener is appropriate for both initial assembly and field modifications to existing Series 10 framing structures.

Key Features

• Designed specifically for Series 10 extrusion end connections
• Button head socket cap screw included for direct installation
• Clip prevents mating profile from rotating, maintaining alignment
• Moderate-strength rating suitable for structural framing applications
• Zinc construction with black finish for corrosion resistance in indoor environments
• 1/4-20 thread size for compatibility with standard Series 10 hardware

Compatibility

Designed for use with 80/20 INC. Series 10 T-slot aluminum extrusion profiles.

Installation Notes

Installation is performed by fabricators or assembly technicians using a hex key sized for a button head socket cap screw. Ensure the extrusion channel end is clear of debris before inserting the fastener. De-energize and lock out any machinery or powered frame assemblies before servicing or modifying installed extrusion structures. Do not overtighten beyond the fastener material rating, as zinc hardware is subject to thread stripping under excessive torque.