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Orange twist-on wire connector with vinyl insulation, small cylindrical shape

3M

3M H-31-POUCH Twist-On Wire Connector Orange 14 AWG

SKU CH-RYFM-QKMKN

Orange twist-on wire connectors join copper conductors up to 14 AWG with a 600 V rating and vinyl insulation

  • Product typeElectrical Connectors
  • Twist-on design secures up to 7 copper conductors
  • Orange vinyl insulation rated for 600 V and 221 °F
  • Handles 14 AWG down to 22 AWG wire combinations
  • UL Listed for code-compliant residential and commercial wiring
  • Compact .86 in height fits tight electrical boxes

14 AWG Twist-On Wire Connector

The 3M H-31-POUCH is an orange vinyl-insulated twist-on connector designed for copper conductors. It accepts a minimum single wire size of 18 AWG and a maximum of 14 AWG. The connector handles up to seven conductors with a maximum combination of two 14 AWG and three 20 AWG wires. It is UL Listed and rated for 600 V maximum voltage.

Installing the twist-on connector

Strip the wire insulation to the appropriate length and align the conductor ends. Twist the connector clockwise onto the wires until the connection feels firm and no bare copper is visible. A common issue is insufficient tightening, which can leave strands loose and increase resistance. Over-tightening may damage the vinyl insulation or nick the copper conductors inside.

Sustained load performance

The connector carries a maximum operating temperature of 221 degrees F and a 600 V rating for continuous duty. The steel contact material maintains consistent pressure on the conductors during thermal cycling. Vinyl insulation resists cracking at the rated temperature limit. The UL Listing confirms the device meets safety standards for prolonged operation within these parameters.

How it compares

Measured against everything we stock in Electrical Enclosures & Cabinets, at today’s prices. Recalculated every night.

Price $105.99
Pricier than about 76% of the 1,411 comparable items (median $39.99).

Specifications

Product
Brand name3M
Product typeElectrical Connectors

Questions about this item

How can I verify the 3M H-31-POUCH connector is working after installation?

After twisting the connector onto the wires, tug each wire gently to confirm a firm mechanical hold, then check that no bare copper is visible below the vinyl insulation. A continuity tester across the joint should show a closed circuit.

What comes in the package and what must I supply myself?

The pouch contains the orange twist-on connectors only. You must provide solid or stranded copper conductors between 22 AWG and 14 AWG, plus a wire stripper and pliers for preparation and tightening.

Which wire-gauge combinations suit the H-31-POUCH orange connector?

Use it for copper wires from a minimum of five 22 AWG up to a maximum of two 14 AWG with three 20 AWG, staying within the 14 AWG maximum single-wire size and the 7-conductor limit.

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