Screws for 4mm Bodies with 4.3mm Head. M2

The small detail that makes a difference in body adjustment

In competitive slot racing, body screws are not a minor accessory. Their metric, length, and head diameter directly affect how much freedom of movement the body has over the chassis, and this controlled tilting influences how the car manages mass transfers in corners. Scaleauto has developed this reference SC-5138 specifically to meet that need: a technical screw set with the precise measurements for the most demanding preparers.

Function and performance

The principle is simple, but its effect on track is notable. The length of 4 mm and the head of 4.3 mm are calibrated so that the screw secures the body without locking it: the part can oscillate laterally in a controlled manner, absorbing inertia without transmitting it to the chassis abruptly. This translates into smoother driving, especially on circuits with chicanes and short-radius corners where the body tends to snag if the adjustment is not right.

The M2 thread ensures compatibility with the usual anchoring points on plastic and 3D-printed chassis, and is designed to withstand multiple assembly and disassembly cycles without losing tension or deforming, something particularly valued by those who frequently work on the preparation bench.

Compatibility and assembly

As this is a standard metric within the 1/32 slot world, these screws fit most plastic and 3D chassis platforms that use M2 anchors. It is advisable to always check the diameter of the housing in the chassis before assembly to ensure that the 4.3 mm head does not interfere with any body geometry.

• Metric: M2
• Total length: 4 mm
• Head diameter: 4.3 mm
• Application: Securing and adjusting body tilt in 1/32 slot
• Brand: Scaleauto (ref. SC-5138)

Common mistakes when working with body screws

One of the most common mistakes on the preparation bench is over-tightening these screws, thinking that this will secure the body better. The result is the opposite: the necessary play is eliminated, the body becomes a rigid part attached to the chassis, and all the dynamic advantages of the tilting system are lost. The key is to leave the tightening just right so that the body can move without hitting the chassis abruptly.

Another common mistake is replacing these screws with standard hardware pieces that, although they share the M2 metric, are not designed for this use: they may have heads of different geometry that cause unnecessary friction or do not allow for the correct centering of the body.

Frequently asked questions

How many screws are included in the package?

The provided information does not specify the number of units per package. We recommend checking the product description in the store listing or contacting us before placing your order.

What scale is this screw set intended for?

It is aimed at 1/32 slot racing, which is the main scale in Scaleauto's spare parts catalogue.

Is it compatible with 3D-printed chassis?

Yes, the M2 metric is common in chassis made through 3D printing. It is advisable to check that the housing is correctly calibrated so that the 4.3 mm head fits without forcing the material.

What is the difference between using this screw and a standard hardware screw?

Standard hardware screws may share the M2 metric but are not designed for the dynamic movement of a slot body. The specific head geometry and length of this Scaleauto reference ensure the correct lateral play and prevent snagging during the race.

How often should I check the tightening of these screws?

It is advisable to check it before each racing session, as the vibrations accumulated during races can slightly loosen the adjustment or, conversely, cause progressive tightening that limits tilting.

Scaleauto SC-5138 M2 body screws for 1/32 slot car competition, 4mm length, 4.3mm head diameter. Designed for precise body tilting adjustment on plastic and 3D-printed chassis. Essential slot car hardware for club racing and serious preparation workbench setups.