Blue fully insulated female blades for 4mm wire. They push onto a 6.4mm spade tab with the whole connector covered, so no metal is exposed. Blue marks 4mm wire in our colour code, which covers medium-duty circuits.
What they fit
Use them on 4mm wire for jobs such as:
- horns and cooling fans
- fuel pump and relay wiring
- 12V sockets and accessory feeds
The 6.4mm tab size is the common spade size on automotive switches, relays, fuse holders and accessories.
How to fit them
- Crimp the 4mm wire into the blue barrel.
- Push the blade onto the 6.4mm tab until it clicks home.
- The sleeve covers the tab, which helps where wires are packed close together.
Use a ratchet crimping tool: it will not release until the crimp is complete, so every blue 4mm join gets the same pressure. Where the join will see water, seal it with dual wall heat shrink.
Specifications
| Type | Fully Insulated Female Blade |
| Wire size | 4mm (blue) |
| Tab size | 6.4mm |
| Contact | Tinned copper barrel |
| Insulation | Fully insulated sleeve |
| Pack | 50 per pack |
| Product code | A2-bib4 |
Other wire sizes
| Size | Colour |
|---|---|
| 3mm wire | red |
| 5mm wire | yellow |
Pairs with: blue male blade terminals. See every type in our fully insulated female blades and crimp terminals ranges.
Pack and pricing
Blue fully insulated female blades come 50 per pack, no minimum order. Buy 5 to 9 packets for 10% off each packet, or 10 or more for 20% off. Orders placed before 12pm are dispatched the same day.
| Product Code | A2-bib4 |
| Condition | New |
| Weight | 0.01kg |