Cone Head Screws 4.8mm M2x7mm

Special Suspension Screws: Millimetric Precision for Serious Setups

When fine-tuning a slot chassis, the small details make the difference between a car that performs and one that simply rolls. These conical head screws from Scaleauto (ref. SC-5145C) are specifically designed for suspension applications where a clean seat, low profile, and the lightweight nature of aluminium are required.

Technical Specifications

Function and Performance

The conical head allows the screw to sit flush or slightly recessed in the mounting surface, preventing interference with other chassis or suspension components. This is particularly useful in tight geometries where any protrusion can affect the free movement of the suspension or cause rubbing with the bodywork.

Aluminium reduces weight compared to conventional steel screws, a minor detail in absolute terms but relevant when optimising gram by gram in competition. Additionally, the shank of ø1.70mm provides precise guidance in the housing, minimising unwanted lateral play.

Installation and Preparation

With 3.5mm of thread and 3.5mm of free shank, this screw is designed for anchors where the threaded part works in an insert or integrated nut, while the shank acts as a pin or guide axle for the suspended element. Before installation, it is advisable to check the cleanliness of the housing and, if the application requires, use a low-strength thread locker to prevent the screw from loosening due to vibration without compromising future disassembly.

Compatibility

General use screws in metric M2. Its most direct application is in Scaleauto chassis and suspension kits, although it can be used in any slot setup that employs this metric and benefits from a 4.8mm conical head. Always check the countersink of the housing before installation.

Frequently Asked Questions

What advantage does the conical head have over a flat or button head?

The conical head sits in a countersink and is flush with the surface, eliminating protrusions that could interfere with the movement of the suspension or the fitting of the bodywork. It is the usual choice when vertical space is critical.

Why aluminium and not steel?

Aluminium is lighter and sufficiently strong for the loads supported by a slot suspension. In applications where the torque is moderate and weight matters, aluminium is the preferred choice among tuners.

How many screws are included in the pack?

The pack contains 6 units.

Do I need any special tools to install them?

Being M2 with a conical head, they require screwdrivers or Allen keys of the size corresponding to the type of drive of the screw. Check the technical sheet of the kit or chassis in which you will mount them to confirm the necessary key size.

Are they compatible with chassis from other brands?

Yes, as long as the chassis or component uses metric M2 and has an appropriate countersink for a 4.8mm conical head. Verify the dimensions of the housing before installation.

Scaleauto SC-5145C conical head screws M2x7mm in aluminium, 4.8mm head diameter, 1.70mm shank, 3.5mm thread length. Pack of 6 units. Ideal for slot car suspension setups requiring precision hardware with low-profile seating. Compatible with any M2 application in slot car chassis preparation and tuning.