3M 7010399302 Butt Splice Terminal Nylon Crimp-on 50 Pack

Product Description

The 3M 7010399302 is a fully insulated crimp-on butt splice terminal designed for making secure inline wire-to-wire connections in electrical installations. The terminal features a nylon insulation sleeve that provides both mechanical protection and electrical isolation at the splice point. Constructed with a copper contact, it delivers reliable conductivity after a proper crimp is applied. At 1 inch overall length, this compact terminal suits tight wiring runs. Each package contains 50 terminals, making it practical for service vans, panel shops, and job-site stock. Electricians and low-voltage technicians reach for this type of terminal when joining two conductors end-to-end without a junction box.

This butt splice terminal is suited for residential and light commercial electrical work, HVAC control wiring, low-voltage thermostat circuits, panel and equipment rough-in, and general repair work. The crimp-on connection method is fast and repeatable with a standard ratcheting crimp tool, reducing the risk of loose connections compared to twist-on methods. The clear nylon insulation allows quick visual confirmation that the conductor is fully seated before crimping. Packaging of 50 terminals per unit supports multi-connection jobs and bulk stocking for service fleets.

Key Features

• Fully insulated nylon sleeve for electrical isolation and mechanical protection at the splice
• Copper contact material for dependable conductivity after crimping
• Crimp-on connection for fast, consistent installation with standard crimp tooling
• Clear insulation allows visual verification of conductor seating before the crimp is set
• Compact 1 inch overall length fits tight wire runs and enclosures
• 50 terminals per package for job-site stocking and multi-connection tasks

Compatibility

Designed as an OEM-style crimp-on butt splice terminal for use in residential and commercial electrical wiring applications where fully insulated inline wire connections are required.

Installation Notes

Installation should be performed by a licensed electrician or qualified technician in accordance with applicable NEC requirements. De-energize the circuit completely before making any splice connections. Use a calibrated ratcheting crimp tool sized to match the terminal and conductor gauge to ensure a gas-tight mechanical connection. Inspect the nylon sleeve for cracks or damage after crimping and replace any terminal that shows signs of deformation or incomplete closure.