Technic, Pin with Friction Ridges and Tow Ball with Round Pin Hole

Connect moving sections in your LEGO® Technic builds with the Pin with Friction Ridges and Tow Ball with Round Pin Hole (6628a). This compact connector combines a friction pin with a rounded tow ball, providing a practical attachment point for compatible ball-and-socket assemblies.

Product Features

• Part Number: 6628a
• Part Type: Technic pin with friction ridges and tow ball.
• Design: Cylindrical pin with a slotted friction section and rounded ball end.
• Connection: Round pin hole fitting and tow ball for compatible socket connections.
• Colour: Multicolor – pictured in Black.
• Applications: Articulated assemblies, mechanical linkages, vehicle components, model restoration and custom LEGO® Technic creations.

Build Flexible Technic Connections

The integrated tow ball enables angled movement when connected to a compatible socket, while the friction ridges help secure the pin within suitable Technic holes. Its compact design is useful for mechanisms requiring articulation without bulky connection assemblies.

Explore more LEGO® Technic pins and connectors to find additional connection elements for your next mechanical build or custom MOC.