3M 7010397397 Butt Splice Terminal Nylon Crimp-on Blue

Product Description

The 3M 7010397397 is a fully insulated nylon butt splice terminal designed for making secure, in-line wire connections in electrical and low-voltage wiring applications. It uses a crimp-on connection method to join two wire ends end-to-end inside a single connector body. The nylon insulation sleeve covers the entire connection, reducing the risk of accidental contact with adjacent conductors. At 1.08 inches overall length, the terminal is compact enough for tight enclosures and junction boxes. Licensed electricians, HVAC technicians, and panel wiring professionals typically reach for this style of terminal when splicing control wiring, sensor leads, or field wiring harnesses.

This butt splice terminal is suited for residential and light commercial electrical work, including control circuit wiring in HVAC systems, thermostat wiring extensions, and general panel or device wiring. The blue color coding helps technicians identify wire gauge range at a glance during installation. It is sold in a package of 100, making it practical for service trucks, shop stock, or multi-unit project runs where consistent, repeatable crimped connections are required.

Key Features

• Fully insulated nylon sleeve for protection against contact with adjacent conductors
• Crimp-on connection method for fast, tool-consistent terminations
• Blue color coding for wire gauge identification
• 1.08 inches overall length fits compact enclosures and junction boxes
• Two wire entries allow straight in-line butt splicing
• RoHS 2011/65/EU compliant for use in environmentally regulated installations

Compatibility

Designed as an OEM-style replacement and general-use butt splice terminal for crimp-on electrical wiring applications where a fully insulated, blue-coded nylon connector is specified.

Installation Notes

Installation should be performed by a qualified electrician or licensed trade professional in accordance with NEC requirements for the circuit being served. De-energize the circuit completely before stripping, inserting, or crimping any conductors. Use a ratcheting or calibrated crimp tool sized for insulated terminals to achieve a consistent, pull-tested crimp. Avoid using pliers or non-rated tools as a substitute for a proper crimping tool, as under-crimping can lead to high-resistance connections.