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Ten brown copper compression lugs with single-hole straight barrels and chamfered ends

3M

3M 31066 500 kcmil One-Hole Lug Compression Connector PK10

SKU CH-ZXZT-6Z5FF

Connects 500 kcmil conductors with seamless copper lugs in a pack of 10

  • Seamless one-piece copper construction ensures reliable conductivity
  • Electro-tin plating resists electrolytic corrosion for lasting performance
  • Chamfered barrel ends simplify conductor insertion during installation
  • Compatible with standard industry crimping tools for easy use
  • Pack of 10 connectors rated for 500 kcmil conductors

Copper Compression Lug 500 kcmil

These 3M copper compression lugs use one-piece seamless construction and electro-tin plating to resist electrolytic corrosion. Each lug accepts 500 kcmil conductors and features a straight barrel with a single mounting hole. Chamfered barrel ends simplify conductor insertion during installation. The pack contains ten connectors for multiple terminations.

Installers Using Standard Compression Tooling

The lugs are designed for installers who have standard industry compression tooling and need reliable copper-to-copper or copper-to-equipment connections. Projects that require a two-hole mounting pattern or a different conductor size will need an alternative connector style. Buyers without access to proper crimping equipment should look at mechanical set-screw lugs instead.

500 kcmil Conductor Size

The 500 kcmil rating is the single specification that determines whether this lug matches the cable being terminated. Using the connector with a smaller or larger conductor will compromise the crimp integrity and the electrical connection. Verify the cable size before purchasing.

Highlights

  • Seamless one-piece copper construction ensures reliable conductivity
  • Electro-tin plating resists electrolytic corrosion for lasting performance
  • Chamfered barrel ends simplify conductor insertion during installation
  • Compatible with standard industry crimping tools for easy use
  • Pack of 10 connectors rated for 500 kcmil conductors

Specifications

Brand3M

Questions about this item

Will the 500 kcmil lug fit the older copper cable I already have in the panel?

The lug covers a wide range of conductor sizes around 500 kcmil; match your cable's exact kcmil rating to the lug's range before crimping.

How can I verify the 31066 lugs are seated correctly after crimping?

Inspect each crimp for full die closure, uniform tin plating exposure and secure conductor insertion at the chamfered entry.

Does the PK10 pack include crimp dies or heat-shrink tubing?

The box contains ten one-hole compression lugs only; dies, heat-shrink and insulation must be purchased separately.

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