M2.5 x 2 Allen screw

The M2.5 Allen screw that Sloting Plus chose for its own wheels

When Sloting Plus decided to migrate its wheels to the metric standard of 2.5 mm, it did so for a clear reason: the M2.5 screw offers better durability and superior tightening strength compared to smaller diameter screws. This Allen screw SP152500 is exactly the part that is factory-fitted in Sloting Plus wheels, making it the reference replacement when it comes to replacing a damaged screw or preparing a set of wheels from scratch.

Technical specifications

• Metric: M2.5
• Length: 2 mm
• Material: Steel
• Required Allen key / bit: 1.3 mm
• Contents per bag: 20 units
• Reference: SP152500

Function and performance

The Allen screw is the element that secures the wheel to the rear axle of the slot car. A screw in good condition ensures that the wheel has no lateral play and does not loosen during the race, which directly translates into traction stability and more consistent lap times. The M2.5 metric provides a more robust thread than conventional M2 screws, reducing the risk of the thread yielding after successive fittings and removals.

Compatibility and assembly

These screws are designed for Sloting Plus wheels that work with M2.5 threads. Always check that the axle and wheel are compatible with this thread pitch before assembly. For tightening, use a 1.3 mm Allen bit or key; using an incorrect bit can damage the internal hex of the screw and complicate future removals.

Assembly and preparation

• Clean the axle and the wheel thread before inserting the screw.
• Tighten with the 1.3 mm Allen bit until you feel resistance; do not overtighten to avoid stripping the thread.
• If the screw needs to withstand intense vibrations on track, you can apply a minimal drop of low-strength threadlocker to prevent unintentional loosening, without compromising future disassembly.
• Includes 20 units per bag, sufficient for multiple preparations or to keep spares in your workshop case.

Common mistakes

• Using an incorrect Allen key: the internal hex of the M2.5 screw specifically requires 1.3 mm. A 1.5 mm or 1.0 mm bit will damage the screw head.
• Confusing the metric: ensure that the wheel has an M2.5 thread and not M2 before forcing the screw.
• Exceeding the torque: as these are steel parts on wheels that may be made of aluminium or other materials, excessive tightening can damage the wheel thread.

Frequently asked questions

What Allen key do I need for these screws?

You need a 1.3 mm Allen key or bit. It is the specific size for the internal hex of the M2.5 x 2 mm screw.

How many units does the bag contain?

Each bag contains 20 units, giving you room for several preparations or to restock your toolbox.

Are they compatible with all Sloting Plus wheels?

They are compatible with Sloting Plus wheels that use M2.5 threads. Always verify the thread pitch of your wheel before assembly, as not all wheels on the market use the same metric.

Why does Sloting Plus use M2.5 instead of M2?

The M2.5 metric offers a larger thread section and, therefore, better resistance to loosening and greater durability against repeated disassemblies compared to M2 screws.

Can I use these screws on wheels from other brands?

As long as the wheel has an M2.5 thread and the length of 2 mm is suitable for the housing, it is possible. Check the specifications of the wheel before fitting them.

Sloting Plus SP152500 allen grub screws M2.5 x 2 mm, steel, 1.3 mm hex key, pack of 20 units. Essential spare part for 1/32 slot car wheel preparation and maintenance, compatible with M2.5 threaded rims. Ideal for club racers and hobbyists looking for reliable, durable wheel fastening solutions.