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Copper two-hole compression lug, purple colour code, straight tongue, pack of ten

3M

3M 31145 Two-Hole Compression Lug 4/0 AWG PK10

SKU CH-CAKS-ATCMX

Two-hole copper compression lug for 4/0 AWG wire, 35 kV rated, CSA and UL listed, pack of 10

  • Product typeTraffic & Parking Lot
  • Copper construction ensures high conductivity
  • Two-hole design provides secure mounting
  • Crimp termination creates reliable connections
  • UL Listed and CSA Certified for safety compliance
  • 10-pack supplies multiple installation needs

Copper compression lug for 4/0 AWG

This 3M two-hole compression lug is built for 4/0 AWG stranded copper conductors. It carries a maximum voltage rating of 35 kV and is UL Listed and CSA Certified. The seamless copper barrel has an inside diameter of .54 in and an outside diameter of .68 in. Supplied in a pack of 10 pieces.

Seamless barrel with 1.75 in hole spacing

The straight tongue measures 1 in wide and features two mounting holes on 1.75 in centres for a 1/2 in stud. Purple colour coding matches die code 15 for correct crimp tool selection. No inspection window is present, so visual verification of wire insertion must be done before crimping. RoHS compliant construction suits regulated installations.

Replaces single-hole or bolted lugs

The dual-hole pattern resists rotation and distributes mechanical stress better than single-hole lugs in high-vibration environments. It upgrades older bolted connections that can loosen over time. Not suited for aluminium conductors or applications requiring an inspection hole for post-crimp verification.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $172.99
Pricier than about 90% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand name3M
Product typeTraffic & Parking Lot

Questions about this item

What voltage does the 35 kV rating cap in practice?

The lug is rated for a maximum of 35 kV, so it is suitable for circuits operating at or below that voltage.

What stud size and hole spacing does the 31145 lug need to mount?

It requires two 1/2 in stud holes with a 1.75 in centre-to-centre distance.

How is the 31145 lug installed and what step is often missed?

Strip the 4/0 AWG copper conductor, insert it fully into the .54 in barrel, then crimp with a die code 15 tool; the purple colour code confirms the correct die.

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