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Bare copper ring terminal with tin finish, 5/16 inch stud size

3M

3M M4-516RK Ring Terminal 5/16 in 4 AWG 1000 V

SKU CH-RYH9-0201A

Crimp-style ring terminal for 4 AWG wire with 5/16 inch stud size, rated 1,000 V and CSA certified

  • Product typeElectrical Connectors
  • Secure 5/16 in stud connection with 4 AWG crimp
  • Handles up to 1,000 V for high-voltage circuits
  • Copper barrel with tin finish resists corrosion
  • Brazed barrel design maintains integrity under load
  • CSA certified and UL listed for code compliance

Product Identity

The 3M M4-516RK is a bare copper ring terminal rated for 1000 V and 4 AWG wire. It suits electricians and maintenance crews terminating building wire, fixtures or signs where a 5/16 in stud is required.

Compatibility Check

Verify the conductor is solid or stranded 4 AWG copper before ordering. Confirm the mounting hardware uses a 5/16 in stud so the .68 in tongue width aligns correctly. Ensure the application does not exceed 347 degrees F operating temperature.

Build & Daily Use

The brazed barrel with .28 in inside diameter and .47 in length resists splitting during crimping. Tin-plated copper contacts resist corrosion in panels or junction boxes. Bare metal construction means installer must add insulation sleeving or tape per local code after termination.

How it compares

Measured against everything we stock in Electrical Enclosures & Cabinets, at today’s prices. Recalculated every night.

Price $268.99
Pricier than about 90% of the 1,411 comparable items (median $39.99).

Specifications

Product
Brand name3M
Product typeElectrical Connectors

Questions about this item

Does the 3M M4-516RK ring terminal include any crimp tool or heat-shrink tubing in the package?

The package contains only the bare copper ring terminals with tin finish. A suitable crimp tool for 4 AWG wire and any desired insulation or heat-shrink must be purchased separately.

Should I choose the 5/16 in stud size or a different stud size for a 4 AWG wire?

This model is built specifically for 4 AWG wire with a 5/16 in stud hole and 0.68 in tongue width. Select a different stud size only if your mounting bolt requires it.

What does the 1,000 V rating mean when the terminal is crimped onto 4 AWG building wire?

The 1,000 V UL and CSA rating applies when the terminal is properly crimped to 4 AWG copper wire, with a maximum operating temperature of 347 Degrees F.

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