M2x3 Allen screw

Precision in every millimetre: the Scaleauto M2x3 Allen screw for wheels and crown gears

In the world of slot racing, the small details are what separate a well-prepared car from one that has issues in corners. The Scaleauto M2x3 Allen screw (ref. SC-5110) is specifically designed for the secure fastening of wheels and crown gears, two of the most critical elements in the transmission and dynamic behaviour of any slot car.

Function and application

This Allen screw —also known as an internal hexagon screw— is used to precisely secure the wheels to the axle and the crown gears to the crown holder. Its M2 thread and 3 mm length make it ideal for the tight spaces and close tolerances characteristic of competitive slot modelling.

• Thread: M2
• Length: 3 mm
• Head type: Allen (internal hexagon)
• Main application: fastening of wheels and crown gears
• Brand: Scaleauto
• Reference: SC-5110

Why this screw matters in your assembly

A poorly sized or low-quality screw can cause play in the crown gear, vibration in the axle, or even the loss of a wheel during a race. Using the specific Scaleauto screw ensures that the tightening is correct without the risk of damaging the thread of the wheel or the crown holder. Scaleauto designs its spare parts with direct compatibility with its own components in mind, simplifying assembly and reducing errors.

Assembly and preparation

For the correct tightening of this M2x3 Allen screw, it is recommended to use an appropriately sized Allen key. Apply a firm but controlled tightening: the aluminium or technical plastic of wheels and crown gears does not require excessive force. If you are going to compete regularly, check the tightening of these screws between sessions, as track vibrations can loosen them with continued use.

Frequently asked questions

Which Scaleauto wheels and crown gears is this screw compatible with?

The SC-5110 is designed for the Scaleauto spare parts ecosystem in general. To confirm exact compatibility with a specific wheel or crown gear model, consult the technical data sheet of the component or contact us directly.

How many units are included in the pack?

The official Scaleauto description does not specify a concrete quantity per pack for this reference. We recommend verifying it at the time of order or consulting us before purchasing.

Can I use this screw with brands other than Scaleauto?

As it is a standard M2x3 thread, it may be compatible with other components that use the same thread standard, provided the hexagonal socket matches. However, we guarantee its compatibility only within the Scaleauto catalogue.

What Allen key do I need for this screw?

You will need an M2 Allen key (internal hexagon of 1.5 mm). It is common in slot preparation tool sets. If you do not have one, you will find specific tools for this type of work at Ministry of Hobby.

The Scaleauto SC-5110 is a M2x3 Allen screw specifically designed for securing wheels and crown gears in slot car assemblies. A precise and reliable fastening solution, compatible with Scaleauto components and essential for any serious slot car builder or club racer looking for consistent performance on the track.