Brass Coupler (2.3-3mm)

The Brass Coupler (2.3-3mm) is a rigid brass shaft coupler with a 2.3 mm bore on one end and a 3 mm bore on the other. It is a simple way to connect a small DC motor with a 2.3 mm shaft to a 3 mm drive shaft, axle or rod in RC models, robots and DIY mechanisms. The brass body is easy to work with and does not rust.

Brass Coupler (2.3-3mm) Specifications

• Type: rigid shaft coupler (shaft size adapter)
• Material: brass
• Bore sizes: 2.3 mm on one end, 3 mm on the other
• Fixing: set (grub) screws clamp each shaft
• Alignment: joins two round shafts on the same axis

Brass Coupler (2.3-3mm) Applications

• Coupling a 2.3 mm motor shaft to a 3 mm shaft or axle
• RC boats and cars
• Small robots, turntables and actuators
• STEM classes and university mechanical projects

What's in the Box

• 1 × brass coupler, 2.3 mm to 3 mm

Tip: Measure both shafts with a caliper before buying: a 2 mm shaft will be loose in the 2.3 mm bore, and a larger shaft will not fit. If the shaft has a flat side, tighten the set screw onto the flat.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.