The TE Connectivity PLASTI-GRIP 52266-3 is a heavy-duty insulated ring tongue terminal designed for terminating high-current electrical wires in aerospace, industrial, and automotive power distribution systems.

It is rated for 4 AWG (≈ 21 mm²) copper conductors and fits a 5/16" (M8) stud, providing a secure bolted connection point for power grounding, bus bars, batteries, and high-load electrical circuits.

The terminal features a tin-plated copper ring lug with a closed barrel crimp design, combined with a yellow PVC insulation sleeve for strain relief and electrical isolation. The PLASTI-GRIP design ensures strong mechanical retention and consistent electrical conductivity after crimping.

This type of terminal is commonly used in aircraft electrical systems, ground power installations, and heavy-duty DC distribution wiring, where reliability and vibration resistance are critical.

Key features include:

TE Connectivity part number: 52266-3
PLASTI-GRIP insulated ring terminal
Wire size: 4 AWG (21 mm²)
Stud size: 5/16" / M8
Material: tin-plated copper
Insulation: yellow PVC sleeve
Closed-barrel crimp design
High vibration resistance connection
Rated for high-current electrical applications (up to 600V class)
Suitable for aircraft and industrial power systems
Provides secure bolted grounding and power termination
Designed for long-term mechanical and electrical reliability