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Bare copper ring terminals, 1/2 inch stud, pack of 500

3M

3M M10-12RK 12-10 AWG ring terminal 1/2" stud 500 pack

SKU CH-Q8P9-GJSK1

Non-insulated ring terminals for 12-10 AWG wire, 1/2" stud, brazed seam, 600 V rated, 500 pack

  • Handles 12-10 AWG wire for secure connections
  • Brazed seam resists separation under vibration or load
  • Rated to 600 V for standard automotive and industrial circuits
  • Withstands 347 °F continuous operating temperature
  • 500-piece pack supplies high-volume wiring jobs

12-10 AWG ring terminals

These 3M M10-12RK ring terminals accept 12 to 10 AWG wire and fit a 1/2 inch stud. The pack contains 500 pieces for high-volume wiring jobs. Each terminal is made from copper with a brazed seam for a strong crimp connection.

Thermal and electrical ratings

The bare copper terminals are rated for 600 V and a maximum temperature of 347 degrees F. No insulation is present, so heat dissipates directly from the metal body. CSA certification and UL listing confirm compliance with recognised safety standards.

Build integration

The 1.19 inch overall length and .75 inch tongue width determine the space needed on a terminal block or bus bar. A crimp tool suited to 12-10 AWG non-insulated terminals is required for installation. The bare finish leaves the conductor exposed for applications where insulation is not desired.

How it compares

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Price $259.99
Pricier than about 92% of the 1,040 comparable items (median $13.99).

Specifications

Product
Brand name3M

Questions about this item

How do I crimp the 12-10 AWG wire into the brazed-seam ring terminal, and what step is often missed?

Strip the wire to expose the copper strands, insert fully into the barrel, then use a ratchet crimp tool sized for 12-10 AWG; the step often missed is verifying the crimp indentation seats all strands without gaps.

Will the copper terminal need replacement due to corrosion or heat cycling?

The bare copper terminal is rated to 347 degrees F and 600 V; under normal automotive or industrial loads it does not require scheduled replacement, though periodic visual inspection for oxidation or loose crimps is recommended.

At what current or temperature does the 1/2" stud connection become the limiting factor during sustained use?

The terminal is UL listed and CSA certified for 600 V and 347 degrees F; the brazed seam and copper construction handle continuous loads within those ratings, so the stud interface is not the first limit under proper torque.

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