Yellow fully insulated 4mm female bullet connector, socket end towards the camera with the metal socket visible inside

Insulated Female Bullet Connectors 4mm - Yellow, 4-6mm² Wire

Yellow (10-12 AWG)
$0.65 NZD
each Save 10% at 10+
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Yellow fully insulated 4mm female bullet connector, socket end towards the camera with the metal socket visible inside
  • Yellow fully insulated 4mm female bullet connector, socket end towards the camera with the metal socket visible inside
  • Yellow female bullet connector dimensions: 26 mm long, about 9 mm across at the socket end and about 7 mm at the wire end
  • Side view of the yellow female bullet connector: wider socket end on the left, narrower wire end on the right
  • Looking into the 4mm socket of the yellow female bullet connector: silver metal socket set back inside the insulated sleeve
Insulated Female Bullet Connectors 4mm - Yellow, 4-6mm² Wire
SKU: BC-FEM-YEL

Insulated Female Bullet Connectors 4mm - Yellow, 4-6mm² Wire

$0.65 NZD
SizeYellow (10-12 AWG)
Order before 7:30am for same-day dispatch Dispatch 7 days a week, excluding public holidays

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

Shipping from $5.99 urban / $9.99 rural, or free pick-up in Te Awamutu.

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

Add $66.00 for Free Urban delivery ($88.00 for Rural)
Urban $66 Rural $88

A fully insulated yellow female bullet connector with a 4mm socket, for crimping onto 4 to 6 mm² wire. Push a matching yellow 4mm male bullet into it to make a joint you can pull apart later. The yellow sleeve covers the whole socket, so the female is the safe half to fit on the supply side of a 12V lead.

Specifications

Connection typeFemale bullet, crimp
Bullet size4 mm socket
Mates withA yellow 4 mm male bullet for 4-6 mm² wire
Conductor cross-section4-6 mm² (about 12-10 AWG)
Insulation coverageFully insulated yellow sleeve over the socket and crimp barrel
Size26 mm long, about 9 mm across at the socket end
Voltage ratingLow voltage only: up to 50 V AC or 75 V DC
Crimp dieInsulated terminal, yellow position
Purchase unitOne connector, minimum 5

Datasheets

Full technical datasheet PDF

What's in the box

1×
Yellow fully insulated female bullet connector, 4 mm

Sold individually. Minimum order: 5 connectors. Your selected quantity is supplied together. Male bullets are not included.

Great for

Plug-apart joints in heavier 12V leads, such as amplifier, winch control or light bar power
Replacing a worn bullet joint on a trailer, boat or caravan loom
Making a lead you can unplug to remove a 12V accessory

Wiring & getting started

  1. Check the sizes with power off

    Use wire with a 4 to 6 mm² conductor and check its insulation fits the sleeve opening. The male half must be a yellow 4 mm bullet for the same wire size; our red MPD1.25-156 male does not fit this female.

  2. Strip and crimp

    Strip to the length of the metal barrel without cutting strands, push the conductor fully in, then crimp with the yellow die of an insulated terminal crimper.

  3. Inspect and join

    Check for loose strands or a split sleeve and give the wire a firm tug. Push the male bullet fully home until the sleeves meet.

  4. Put the female on the supply side

    The female is fully covered, so fit it on the side that stays live when the joint is unplugged. The male bullet's tip is bare metal.

Note: the sleeve insulates but is not sealed. For engine bays, trailers or outdoor wiring, add adhesive-lined heat-shrink over the joint. See our crimp terminal colour code and crimping guide.
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.

What does this female bullet plug onto?
A yellow 4 mm male bullet made for the same 4 to 6 mm² wire. Bullets do not interchange across sizes and makers, so check the male before you crimp. Our red MPD1.25-156 male, which suits thinner wire, does not fit this female.
What wire size suits it?
Wire with a 4 to 6 mm² copper conductor, about 12 to 10 AWG. Check the wire insulation fits inside the yellow sleeve and use the yellow die on your crimper.
Which side of the joint should the female go on?
The supply side, the side that stays live when the joint is unplugged. The female is fully covered by its sleeve, while the male bullet tip is bare metal.
Do I need a crimping tool?
Yes. Use a crimper with a die for insulated terminals, in the yellow position. Pliers squash the sleeve and give a weak joint.
Are they waterproof?
No. The sleeve insulates but is not sealed. For engine bays, trailers or outdoor wiring, add adhesive-lined heat-shrink over the joint.
Does a quantity of one mean one connector?
Yes, one unit is one female connector. The minimum order is 5, with discounts at 10 and 20.

Have a Question About This Product?

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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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