M2 locking nuts

The non-moving tightness: Scaleauto M2 self-locking nuts

In the world of competitive slot racing, the smallest details make the difference between a car that maintains its setup throughout a session and one that loses it after a few laps. The Scaleauto M2 self-locking nuts (SC-5118) are designed precisely for this: to ensure that each M2 screw in your assembly remains in its exact position, no matter how much the car endures vibrations, accelerations, and braking on the track.

Function and performance

The self-locking nuts incorporate an insert or friction zone that prevents spontaneous rotation under vibration and dynamic load. Unlike a standard nut, they do not require a locknut or adhesive: the geometry of the element itself retains the tightness. This makes them a particularly valued option in motor mounts, chassis, and any point of the car where frequent disassembly or track work demands speed without sacrificing safety.

Compatibility and applications

The M2 thread is one of the most widespread standards in the slot hobby and competitive modelling. These nuts fit with the usual M2 screws found in chassis, motor mounts, axle supports, and other mounting elements of 1/32 and 1/24 scale slot cars. They are the natural complement to the screws and preparation tools in the Scaleauto catalogue.

Assembly and preparation

Their use does not require special tools beyond the usual ones found in a slot workshop. It is enough to tighten with the corresponding wrench or screwdriver to the necessary torque; the self-locking insert does the rest. To loosen them, a bit more force is needed than with a conventional nut, which is precisely their advantage: the setup does not move on its own.

Common mistakes

• Excessive reuse: the self-locking insert loses effectiveness with repeated assembly and disassembly cycles. It is advisable to replace them when it is noticed that the retention torque has decreased significantly.
• Thread confusion: always verify that the screw is M2 before assembly to avoid damaging the insert.
• Excessive tightening: on plastic or resin parts, overtightening can damage the support. Applying the correct torque is sufficient.

Frequently asked questions

How many nuts are included in the SC-5118 pack?

The exact quantity per pack is not specified in the available data. We recommend checking directly with us before placing your order if you need a specific amount.

Can I use them with M2 screws from other brands?

Yes. Being a metric standard (M2), they are compatible with any standard pitch M2 screw, regardless of the brand.

Can they be reused?

They can be reused a limited number of times. The self-locking insert loses retention with each tightening-loosening cycle. For competitive applications where the security of the setup is critical, it is most advisable to replace them periodically.

Are they suitable for 1/24 scale as well as 1/32?

The M2 thread is used in both scales, so they are valid for any assembly that employs this screw diameter, regardless of the car's scale.

Do I need any special tools to mount them?

No. The usual slot workshop tools (sockets or fine-tipped pliers of the appropriate size) are sufficient to work comfortably with M2 nuts.

Scaleauto SC-5118 M2 nylon insert lock nuts — essential hardware for slot car preparation and assembly. Compatible with standard M2 metric screws, these self-locking nuts prevent loosening caused by vibration and dynamic loads during racing. A must-have workshop component for 1/32 and 1/24 slot car builders looking to keep their setup consistent lap after lap.