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Pack of ten red nylon-insulated copper ring terminals with 1/4 inch stud size

3M

3M MN8-14R/SX 8 AWG Nylon Ring Terminal 1/4" Stud Red PK10

SKU CH-7D1J-HFPWR

Nylon-insulated 8 AWG ring terminal with 1/4 in stud, brazed seam, CSA and UL listed for 600 V, pack of 10

  • Overall length3.2
  • Main materialCopper
  • Product typeBuilding Wire
  • 8 AWG wire range handles heavy current loads
  • Red nylon insulation identifies circuits and resists 221 °F
  • Brazed seam prevents splitting during crimp
  • 1/4" stud fits common automotive terminals
  • CSA and UL listed for 600 V safety

8 AWG Nylon Ring Terminal

The 3M MN8-14R/SX is a crimp-style ring terminal built for 8 AWG copper wire. It suits automotive, marine and industrial wiring jobs where a secure 1/4 inch stud connection is required. The nylon insulation and red colour coding simplify identification during installation. Electricians and technicians use it for power distribution and grounding tasks.

10-Pack Capacity and 600 V Rating

A pack contains ten terminals, giving enough units for multiple connection points or spare stock. Each terminal is rated for 600 volts and a maximum temperature of 221 degrees F, providing headroom for standard low-voltage and mains-rated circuits. The brazed seam maintains integrity under vibration, though the 8 AWG wire range limits use to that specific conductor size.

CSA and UL Listed Build Quality

The copper connector with brazed seam meets CSA and UL standards for safety and reliability. Nylon insulation resists abrasion and chemicals better than vinyl alternatives. The 0.47 inch tongue width fits a 1/4 inch stud cleanly, while the 1.26 inch overall length allows adequate crimp area. Red insulation enables quick visual confirmation of wire gauge in busy panels.

How it compares

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

Price $39.99
Pricier than about 61% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand name3M
Product typeBuilding Wire
Size & build
Main materialCopper

Questions about this item

Will the 1/4" stud on these 8 AWG terminals fit the existing bolts on my battery posts?

The terminals have a 1/4 inch stud size and a 0.47 inch tongue width; match those dimensions to your current bolts to confirm fit.

How can I verify a proper crimp on the 8 AWG wire after installation?

A correct crimp shows no loose strands, the insulation sits flush with the barrel, and the brazed seam remains closed; a gentle tug test should hold firm.

Does the pack of 10 include any heat-shrink or crimp tool, or must I buy them separately?

The package contains only the ten nylon-insulated ring terminals; a compatible crimp tool and any additional insulation are sold separately.

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