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Pack of ten copper compression lugs, purple finish, one-hole straight barrel

3M

3M 31045 One-Hole Lug Compression Connector 4/0 AWG PK10

SKU CH-JDGC-KMJ5G

Seamless copper lugs with electro-tin plating connect 4/0 AWG conductors in packs of 10

  • Seamless one-piece construction ensures reliable conductivity
  • Electro-tin plating resists electrolytic corrosion
  • Chamfered barrel simplifies conductor insertion
  • Compatible with standard industry compression tooling
  • Pack of 10 connectors for multiple terminations

3M One-Hole Lug 4/0 AWG Pack of 10

These 3M compression lugs are copper connectors designed for terminating 4/0 AWG conductors. They suit electricians and installers who need reliable terminations for large-gauge wire in electrical systems. Each pack contains 10 lugs for multiple connection points. The one-hole design fits standard mounting configurations.

One-Piece Seamless Copper Construction

Each lug features one-piece, seamless copper construction for mechanical strength and consistent conductivity. The electro-tin plating resists electrolytic corrosion across the contact surface. Chamfered barrel ends simplify conductor insertion during installation. Standard industry compression tooling completes the termination.

For 4/0 AWG Single-Hole Applications

These lugs suit projects requiring 4/0 AWG terminations with a single mounting hole. Installers needing two-hole mounting, different wire gauges, or non-copper conductor compatibility should look at other connector styles. The pack quantity fits jobs requiring up to ten terminations.

How it compares

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

Price $142.99
Pricier than about 91% of the 1,040 comparable items (median $13.99).

Specifications

Product
Brand name3M

Questions about this item

What does the 4/0 AWG rating mean when I install this lug?

It means the lug barrel is sized for 4/0 AWG copper conductors, giving a full-contact crimp that carries the cable's full ampacity without hot spots.

What crimping standard applies to the 31045 and what does it limit?

Standard industry compression tooling and dies for 4/0 AWG copper lugs apply; the crimp quality is limited by using the correct die and tool calibration.

What physical clearance does the one-hole flange need to mount?

The lug has a single bolt hole on a straight barrel; allow space for the bolt diameter, a washer, and torque tool access around the flange.

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