M2.5x3 Allen screws 20pcs

Allen Screws M2.5x3: precise fastening for your slot assemblies

When working on the setup and preparation of a slot car, the small details make the difference between an assembly that withstands competition sessions and one that causes problems at the worst moment. The M2.5x3 Allen screws from Sloting Plus are one of those components that the experienced tuner always has on hand.

Product Features

• Metric: M2.5
• Length: 3 mm
• Drive: Allen (internal hex)
• Pack Contents: 20 units
• Reference: SP152502
• Manufacturer: Sloting Plus

Function and Performance

Allen screws —also known as set screws or grub screws— allow for the fastening of parts together without any head protruding, which is particularly useful in tight spaces such as crowns, pinions, axles, and mounts. The M2.5 metric is one of the most common in the slot universe, and the length of 3 mm makes it suitable for a wide variety of fastening applications in chassis, transmissions, and suspension components.

Being driven by an Allen key, they provide controlled and uniform tightening, reducing the risk of loosening due to vibration during the race. Sloting Plus, a brand specialised in slot preparation tools and spare parts, guarantees appropriate tolerances for clean and snug threading.

Compatibility and Assembly

This type of screw is compatible with any M2.5 thread present in common slot preparation components. Always check that the housing is clean and free of adhesive residue or dirt before assembly. Use the correctly sized Allen key to avoid damaging the internal hex. If the assembly requires particularly firm tightening, a small drop of low-strength thread locker can secure the piece without hindering future interventions.

Ideal for…

• Tuners who frequently assemble and disassemble transmission components.
• Hobbyists who build or modify their own chassis.
• Club workshops that need to keep stock of common spare parts.
• Any assembly where a conventional screw head would not fit.

Frequently Asked Questions

What are Allen screws used for in slot?

They are primarily used to secure crowns onto the axle, attach pinions to the motor, or lock any rotating part where a protruding screw head would cause interference or imbalance.

What Allen key do I need for these M2.5 screws?

The M2.5 metric typically requires a 1.5 mm shaft Allen key. Check the internal hex of the screw before tightening to ensure you are using the exact size and not damaging it.

Are they reusable?

Yes, as long as they have been tightened and loosened correctly with the appropriate key and show no deformation in the internal hex. It is advisable to replace them if they show signs of wear to ensure reliable tightening.

Why buy a pack of 20 units?

In slot preparation, it is common to lose or wear out these small components with continued use. Having a pack of 20 units ensures that you will always have a spare without having to stop work at the least opportune moment.

Can I use thread locker with these screws?

Yes, but preferably use a low-strength thread locker (blue type) to be able to disassemble the piece in the future without difficulty. High-strength lock adhesives can greatly hinder disassembly in such small parts.

Sloting Plus SP152502 Allen grub screws M2.5x3, pack of 20 units — essential fastening hardware for slot car preparation and tuning. Compatible with M2.5 threaded components across a wide range of slot car chassis, axles, gears and motor mounts. A reliable choice for club racers, hobbyists and professional tuners who demand precision in every build.