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Clear nylon crimp connector for 10 AWG wire, 50 pack

3M

3M S-31-A Crimp Wire Connector 10 AWG Clear Nylon 600 V 50

SKU CH-HY68-N5B2H

Crimp connector for copper wire up to 10 AWG with clear nylon insulation rated to 600 V

  • TypeElectrical Connectors
  • Handles up to 10 AWG copper wire
  • 600 V rating for mains voltage circuits
  • CSA certified and UL listed for safety compliance
  • Nylon insulation withstands -40 °F to 221 °F
  • Compatible with TH-440 and TH-450 crimp tools

3M S-31-A Crimp Connector 50 Pack

These 3M S-31-A closed-end crimp connectors join copper wires in electrical installations. The clear nylon insulation allows visual confirmation of the crimp connection. They are suited for electricians and technicians terminating wires up to 10 AWG in panels or junction boxes. Each pack contains fifty connectors rated for 600 V.

Tool Installation and Wire Limits

Installation requires a compatible crimp tool such as the TH-440 or TH-450 model. The connector accepts a minimum wire combination of one 22 AWG with one 12 AWG and a maximum combination of two 14 AWG conductors. Using wires outside the 18 AWG to 10 AWG range or an incorrect tool can produce a loose crimp that fails under vibration or load.

Check Wire Gauge and Voltage Before Ordering

Verify that your conductors fall within the 18 AWG to 10 AWG range and that the circuit voltage does not exceed 600 V. The nylon insulation is rated from -40 °F to 221 °F, so confirm the operating environment stays within these limits. Buyers needing to splice larger conductors or higher voltage circuits cannot use this connector.

Highlights

  • Handles up to 10 AWG copper wire
  • 600 V rating for mains voltage circuits
  • CSA certified and UL listed for safety compliance
  • Nylon insulation withstands -40 °F to 221 °F
  • Compatible with TH-440 and TH-450 crimp tools

Specifications

Brand3M
TypeElectrical Connectors

Questions about this item

How can I verify the crimp is secure after using the TH-440 or TH-450 tool?

A correct crimp shows the copper contact fully compressed around the wires with no exposed conductor and the clear nylon insulation seated flush to the wire jacket.

What comes in the package and do I need a separate crimp tool?

The pack contains 50 clear nylon closed-end connectors rated for 600 V; the compatible TH-440 or TH-450 crimp tool is sold separately.

Which wire gauge combinations does the S-31-A support?

It accepts copper wire from 18 AWG up to 10 AWG, with a minimum combination of one 22 AWG plus one 12 AWG and a maximum of two 14 AWG conductors.

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