Insulated Female Bullet Connectors – 4mm/5mm Crimp (Red/Blue/Yellow)

Insulated female bullet connectors — push-fit crimp sockets with a coloured, fully insulated barrel that receives a matching male bullet. Crimp onto the wire, then push a male bullet into the open end for a neat in-line connection you can pull apart by hand. The listed size is the diameter of the male bullet it accepts, and the anti-vibration copper insert grips the wire for a secure, reliable crimp.

Anti-vibration copper inserts

An extra copper ring inside the barrel bites into the wire and resists loosening under vibration, for a solid, repeatable crimp.

Bullet sizes available
4.0mm and 5.0mm (accepts the matching male bullet diameter)

Wire size by colour
Red: 0.25mm² - 1mm² (22-18 AWG)
Blue: 1.1mm² - 2.6mm² (14-16 AWG)
Yellow: 2.5mm² - 6.5mm² (12-10 AWG)

Standards
Manufactured to BS4579 and BS4G178

Pack quantities
100 & 1000

Uses
Automotive, motorcycle, classic-car and trailer wiring — the traditional in-line connector for looms, lighting and accessories. Push-fit for easy disconnection.

Pairs with our Insulated Male Bullet Connectors to complete the joint.

Also known as female bullet terminals, bullet sockets, bullet receptacles, 4mm/5mm bullet connectors or in-line push-fit sockets.