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Ten copper ring terminals with 5/16 inch holes

The Wires Zone

The Wires Zone 1/0 Gauge 5/16" Copper Ring Terminals 10 Pack

SKU CH-FG85-RA4K6

Connects 1/0 gauge wire with 5/16 inch non-insulated copper ring terminals, ten per pack

  • Product typeCable Terminals & Clips
  • 1/0 gauge cable fits securely with 5/16" ring size
  • Pure copper construction ensures superior electrical contact
  • Non-insulated tubular lug design allows direct connection
  • Ten terminals per pack covers multiple installation points
  • Ideal accessory for speaker and amplifier wiring jobs

1/0 Gauge copper terminals for high-current wiring

These non-insulated pure copper ring terminals accept 1/0 AWG conductors and feature a 5/16" stud hole. The pack contains ten pieces suited to automotive audio amplifiers, power distribution blocks and similar high-current installations. They provide a direct metal-to-metal connection without an insulating sleeve.

Sustained current handling through solid copper

The tubular lug design maximises contact area between cable and terminal, reducing resistance under continuous load. Pure copper resists heat buildup better than plated alternatives, so voltage drop remains stable during extended amplifier operation. Crimping or soldering creates a permanent joint that will not loosen from vibration.

Non-insulated lugs demand careful routing

Because the barrels are bare copper, installers must add heat-shrink or tape to prevent accidental shorts against chassis metal. The 5/16" ring fits common distribution-block bolts and battery terminals, allowing clean stacking of multiple cables. Ten terminals per pack cover a typical dual-amplifier install with spares for future changes.

How it compares

Measured against everything we stock in Amp Wiring Kits & Install Parts, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 90% of the 259 comparable items (median $12.99).

Specifications

Product
Product typeCable Terminals & Clips

Questions about this item

Do these 1/0 gauge copper lugs run hot or draw extra power when used all day?

They are passive copper terminals with no active circuitry, so they generate no heat and consume no power during continuous use.

What crimping tool or cable size must I already have to install these 5/16" ring terminals?

You need a crimper rated for 1/0 AWG cable and 1/0 gauge wire that fits the non-insulated tubular lug bore.

Will these pure copper terminals corrode or loosen when paired with older aluminium battery posts?

Copper-to-aluminium joints can oxidise over time; use an antioxidant compound and check torque periodically to maintain a solid connection.

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