Quick answer: A single screw BP connector joins two wires with one clamping screw. Switch off the power, strip only the insulation you need, push the wire in fully, tighten the screw and give the wire a gentle tug. Our 6mm connector is rated at 32 amps, so keep the circuit current below that. Mains wiring should be done by a licensed electrician.
What a single screw BP connector is
A single screw BP connector (also called a B&P connector) is a small electrical joiner. A metal sleeve sits inside a plastic body, and one screw clamps the wire. There is no soldering and no crimping tool, only a screwdriver. The joint is easy to check by eye.
Where people use them
- Vehicle repairs: extending a lead, fixing a cut wire or adding a connection.
- Boats and marine electronics: joining wires for lights, pumps or accessories.
- Workshop and bench work: temporary connections while you test a circuit.
- General wiring repairs: extensions where soldering is not practical.
Check that the connector suits your application and your wire before you use it.
How to fit a single screw BP connector
- Switch off the power and confirm the circuit is dead.
- Strip back only as much insulation as you need, so no bare copper is left outside the connector.
- Push the wire in fully and tighten the screw firmly, without overtightening.
- Give the wire a gentle tug to make sure it is held.
- Repeat for the second wire, and insulate the joint if your job needs it.
Rating and limits
| Item | Detail |
|---|---|
| Size | 6mm |
| Rating | 32 amps (a limit, not a target) |
| Fixing | Single clamping screw, no soldering or crimping |
| Pack | 100 per jar |
| Price | $22.80 (AUD) |
A connector that is too small for the wire, or a wire that is too thick for the connector, will not give a safe joint. If you are not sure that the 6mm size suits your wire, send us a message before you order.
Common mistakes to avoid
- Too much bare copper outside the connector. Strip only what you need.
- Overtightening the screw. Tighten firmly, not until it crushes the wire.
- Using damaged or corroded wire. Cut back to clean, bright copper first.
- Forgetting to recheck on vehicles and boats. Shaking can loosen a screw, so check it after a short period of use.
- Leaving a joint in standing water. In damp places, keep the joint out of water and insulate it properly.
Mains wiring: if the job involves mains wiring and you are not confident, speak to a licensed electrician. Fridge and coolroom controls, relays and fan motors are mains-powered, so fitting should be done by a licensed refrigeration mechanic or electrician.
Tidy the job with cable ties
After joining wires, secure the bundle so it does not rub or pull on the joint. Our black UV stabilised Nylon 66 cable ties (4.8 x 250mm, pack of 500, $23.50) suit wiring and hoses. The listing states a UL 94V-2 flame rating. Leave a little slack on bundles that carry current, keep ties away from sharp metal edges and trim the spare tail close to the head.
Buy a jar of 100
The single screw BP connector, 6mm, 32 amp, jar of 100 suits workshops, mobile repair vans and tradespeople who join wires often. Keep the lid on and the jar dry. Orders placed by 6pm Sydney time ship the same business day from Colebee, NSW. Need help choosing? Use Find Your Part or message us.
Working on a fridge or coolroom? See our guides on coolroom not cooling and bar fridge not cooling, and browse commercial fridge parts.
Single screw BP connector FAQs
What is a single screw BP connector?
A single screw BP connector is a small electrical joiner. A metal sleeve sits inside a plastic body, and one screw clamps the wire. You push the bare wire in, tighten the screw and the wire is held without soldering or crimping.
What does the 32A rating mean?
Each connector is rated at 32 amps. That is a limit, not a target, so keep the current in the circuit below it. A connector that does not suit the wire will not give a safe joint.
Can I use BP connectors on mains wiring?
Mains wiring is regulated work. If the job involves mains wiring and you are not confident, use a licensed electrician. Do not use these connectors on 240V fridge or coolroom wiring unless a licensed person confirms it is suitable.
How do I know the connector holds the wire?
After tightening the screw, give the wire a gentle tug. It should not move. On vehicles and boats that shake, check the screw again after a short period of use.
Can I use a connector on corroded or damaged wire?
No. Cut back to clean, bright copper first. A damaged or corroded wire will not make a reliable joint.
How should I store them?
Keep the lid on and store the jar somewhere dry so the metal parts stay in good condition. Tip a few into your hand instead of pouring out the whole jar.