Red insulated M4 ring terminal for 0.5-1.5 mm² (22-16 AWG) wire, angled view

Insulated Ring Terminals - Red and Blue, M4 and M5 Crimp Ring Connectors

Red M4 (22-16 AWG)
$0.29 NZD
each Save 25% at 10+
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Red insulated M4 ring terminal for 0.5-1.5 mm² (22-16 AWG) wire, angled view
  • Red insulated M4 ring terminal for 0.5-1.5 mm² (22-16 AWG) wire, angled view
  • Red M4, blue M4 and blue M5 insulated ring terminals side by side, showing sleeve and ring sizes
  • Blue insulated M4 ring terminal (RV2-4) viewed from above, ring and sleeve outline
  • Blue insulated RV2-5 M5 ring terminal viewed from above
  • Blue RV2-5 ring terminal infographic with material and insulation callouts
  • Blue RV2-5 ring terminal infographic showing the M5 and RV2-5 identification
Insulated Ring Terminals - Red and Blue, M4 and M5 Crimp Ring Connectors
SKU: RT-RED-M4

Insulated Ring Terminals - Red and Blue, M4 and M5 Crimp Ring Connectors

$0.29 NZD
Size
Order before 7:30am for same-day dispatch 7-day dispatch, excluding public holidays

NZ Post: 1-2 days urban · 2-4 days rural

Shipping from $5.99 urban / $9.99 rural.

Buy more, pay less Prices shown are per unit. Add enough of this item and the lower rate applies on its own at checkout. There is no code to enter and you do not need to buy a pack. Choosing a tier here just sets the quantity for you. Larger quantities go out in the same bag, so packing, handling and postage cost us less per unit. We pass that saving straight on to you, so you can buy more for less.

Minimum order quantity: 5

Easy 30-day returns · 12-month warranty

Free Urban delivery on orders over $66
Urban $66 Rural $88

Insulated ring crimp terminals for bolting a wire to a stud, screw or terminal post. Choose the colour by your wire size and the ring by your stud size: red M4 for 0.5-1.5 mm² (22-16 AWG) wire, or blue M4 and M5 for 1.5-2.5 mm² (16-14 AWG) wire. They are sold individually with a minimum of 5 of a size, and the price per terminal drops as you buy more.

Specifications

TypeInsulated ring crimp terminal
Red M40.5-1.5 mm² / 22-16 AWG wire, M4 stud or screw
Blue M4 (RV2-4)1.5-2.5 mm² / 16-14 AWG wire, M4 stud or screw
Blue M5 (RV2-5)1.5-2.5 mm² / 16-14 AWG wire, M5 stud or screw
Blue terminal current rating27 A maximum
TerminationCrimp, with the red or blue jaw of an insulated-terminal crimper

Datasheets

Blue M5 (RV2-5) datasheet PDF

What's in the box

5+
Loose insulated ring terminals in the size you choose

One quantity is one terminal, with a minimum of 5 of each size. Bulk pricing applies to each size at 10, 25, 50 and 100 pieces.

Great for

Earth and battery leads on a 12V vehicle, boat or caravan
Bolting wires to a bus bar or distribution block
Screw terminals on power supplies and chargers
Stud connections inside control panels and enclosures

Wiring & getting started

  1. Pick the size

    Red for 0.5-1.5 mm² wire, blue for 1.5-2.5 mm² wire. Then pick the ring that matches your stud: M4 or M5.

  2. Strip and insert

    With the power off, strip enough insulation for the conductor to reach the end of the metal barrel. Twist the strands and push the wire in fully.

  3. Crimp and pull test

    Crimp in the jaw that matches the sleeve colour until the ratchet releases. Pull the wire firmly; it should not move.

  4. Fit the ring

    Place the ring flat over the stud or screw, tighten the nut or screw and check clearance before restoring power.
Related guide Crimp Terminal Colour Codes: Wire Sizes and How to Crimp ProperlyWhat red, blue and yellow crimp terminals fit, how to match them to your wire, when to use butt, spade, ring or bullet terminals, and how to make a crimp tha...

Frequently Asked Questions

Answers to the questions buyers ask most.

Which colour do I need?
Choose by wire size. Red fits 0.5-1.5 mm² (22-16 AWG) wire and blue fits 1.5-2.5 mm² (16-14 AWG). Wire right at 1.5 mm² fits either, so pick the one the stripped conductor fills snugly.
Which ring size fits my stud?
The M4 ring suits M4 screws and studs, and the M5 ring suits M5. Use the ring that matches your stud so it sits flat under the nut or screw head without moving around.
How many do I get?
Each quantity is one terminal. The minimum is 5 of a size, and you can mix sizes in one order. The bulk discount applies to each size at 10, 25, 50 and 100 pieces.
How much current can they carry?
The blue terminals are rated at 27 A maximum. In practice the wire size, the crimp and the temperature set the safe current, so size the wire and fuse for your load.
What tool do I need?
A ratcheting crimper for insulated terminals. Use the red jaw for red terminals and the blue jaw for blue. Pliers often leave the wire loose in the barrel.
Are they waterproof?
No. The insulating sleeve is not sealed. In wet places, cover the crimp with adhesive-lined heat shrink after fitting.

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Why Buy from NZN

Useful parts, fair prices and someone local to help.

I'm Lukas, an engineering student and maker based in Te Awamutu. NZN grew out of a CNC build that dragged on for months because every missing cable, bolt or electronic part meant another overseas order. I started the shop so Kiwi makers can spend more time building and less time waiting for the next parcel.

More about NZN Electronics

  • Stocked here in New Zealand

    Orders are picked and packed in Te Awamutu and dispatched within 24 hours every day, excluding public holidays. NZ Post target delivery is 1-2 days urban and 2-4 days rural. In Te Awamutu and Kihikihi you can choose local delivery at checkout: same day if you order before 8am, otherwise next day.

  • Fair prices, clearly shown

    Prices are kept competitive and quantity discounts are shown upfront. Free delivery starts at $66 for urban addresses and $88 for rural addresses.

  • 30-day returns and 12-month warranty

    Get in touch if something is not right and we will help sort it.

  • Practical product support

    Ask a product question and get help from a real person in New Zealand who knows the range.

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