M2 8mm steel Allen screws (10 units)

Small in metric, decisive in setup: the M2 x 8 mm Allen screw for slot car chassis.

When the setup of a slot car is fine-tuned to detail, every millimetre counts. These Allen bolts M2 x 8 mm made of high-strength steel are designed for those who leave nothing to chance: club preparers, competition drivers, and enthusiasts who build or adjust their own chassis — including 3D-printed ones — where a reliable, precise screw that does not yield with use is required.

Function and performance

The headless Allen screw (bolt) is the reference element for limiting the vertical travel of the front axle in slot car chassis. By not having a head, it allows for precise adjustment of the thread depth and locks the position without adding mass or interfering with other components of the front end.

The length of 8 mm is particularly practical when the support, bracket, or plate is thicker than usual, or when a wider adjustment range is needed than what a standard 4 or 6 mm screw offers. It is also used to secure and align components on motor mounts or axle supports in high-performance configurations.

Compatibility and installation

The M2 metric is one of the most widespread in the world of competitive slot racing: compatible with the vast majority of commercial chassis and 3D-printed parts on the market. Before installation, it is advisable to check that the threaded housing is clean and in good condition to ensure a firm and snug fit.

For tightening, it is recommended to use an Allen key of the appropriate size for the internal hex of the bolt. A moderate torque is sufficient: the high-strength steel ensures that the thread does not yield, but an M2 thread in an aluminium or resin housing can be damaged if over-tightened.

Common mistakes

• Using a worn Allen key: the hexagon of an M2 has very little margin; a damaged key rounds off the grip and complicates future adjustments.
• Not checking the available thread depth: 8 mm is a generous length; ensure that the housing has enough travel to screw it in without reaching the bottom.
• Confusing bolt with head screw: the Allen bolt has no head, allowing for continuous depth adjustment. It is not interchangeable with a conventional screw in applications where the head serves as a stop.

Frequently asked questions

What are these screws used for in a slot car?

Their most common use is as a stop or limiter for the front axle travel, allowing precise regulation of the height at which the axle operates, and therefore, the front geometry of the chassis. They are also used to secure or align parts on mounts, motor supports, and other chassis elements.

What types of chassis are they compatible with?

Being M2 metric, they are compatible with the vast majority of slot car chassis on the market, both commercially manufactured and 3D-printed, that use this standard thread. Always check the size of the housing before installation.

What size Allen key do I need?

It depends on the internal hex of the bolt. Headless M2 Allen screws typically require a 1.3 mm or 1.5 mm key. Check the specifications of the screw or try with your precision Allen key set.

Can they be reused or should they be replaced after each adjustment?

Under normal usage conditions, they can be reused without issue. The high-strength steel withstands the tightening and loosening cycles typical of setup. If you notice that the thread or hex grip has lost shape, it is time to replace them.

Does the pack include only 8 mm screws or are there other lengths available?

This pack contains exclusively 10 M2 x 8 mm Allen screws. If you need other lengths of the same metric, check the other available references in the screws category.

M2 grub screws 8mm steel for slot car chassis tuning — pack of 10 hardened steel Allen set screws ideal for front axle height adjustment, 3D-printed chassis builds, and precision racing setup. Standard M2 thread compatible with most competition slot car components and motor mounts.