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Red nylon butt splice connectors in bulk pack of 1000

3M

3M MNG18BCK Butt Splice Connector 22-18 AWG Pack of 1000

SKU CH-GCA2-6NBH0

Red insulated nylon butt splice connectors accept 22-18 AWG wire, crimp with brazed brass barrels, rated 600 V and 221 °F, CSA and UL listed, pack of 1000

  • 22–18 AWG wire range fits common automotive and marine circuits
  • Nylon insulation resists heat up to 221 °F for engine-bay reliability
  • Brazed seam and brass barrel deliver a solid crimp that won’t split
  • UL Listed and CSA Certified for code-compliant installations
  • 1 000-piece bulk pack keeps large wiring jobs supplied

22-18 AWG Crimp Butt Splices

These 3M nylon-insulated butt splices accept stranded wire from 22 to 18 AWG and are crimped with a standard hand tool. The brazed seam barrel prevents the connector from splitting under tension. A pack of 1000 pieces suits high-volume automotive, marine and industrial wiring jobs. The red insulation colour codes the wire range for quick identification on the bench.

Replaces loose twist-and-tape joints

Crimped splices eliminate the intermittent contact and corrosion that develop in taped or solderless twist connections. The upgrade is worth it whenever a circuit sees vibration, moisture or thermal cycling that would degrade a mechanical twist. UL and CSA listings confirm the connector meets recognised safety standards for permanent installations. No soldering iron or heat gun is required to complete the joint.

Holds 600 V at 221 °F continuously

The brass barrel and nylon insulation are rated for 600 volts and a maximum operating temperature of 221 degrees Fahrenheit. Brazed seam construction maintains electrical integrity and mechanical strength during prolonged thermal stress. The 1.0 inch overall length and 0.07 inch barrel inside diameter keep the finished splice compact inside conduit or loom. Not suited for wire gauges larger than 18 AWG or applications above the rated voltage and temperature.

How it compares

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Price $790.99
Pricier than about 99% of the 547 comparable items (median $17.99).

Specifications

Product
Brand name3M

Questions about this item

What wire gauge range does the 22-18 AWG butt splice accept?

The connector accepts solid or stranded wire from 22 AWG up to 18 AWG, matching the barrel inside diameter of 0.07 in.

Which crimp tool setting or die should I use for the brazed-seam barrel?

Use a ratchet crimper with a red-die nest sized for 22-18 AWG nylon-insulated splices; one full cycle seats the brazed seam without splitting the barrel.

How often should the nylon-insulated splices be inspected in a 221 °F engine-bay environment?

Check for insulation discolouration, brittleness or cracking at each scheduled service interval; replace any splice showing heat damage to maintain the 600 V rating.

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