Black Arrow Spring Nut

Black Arrow Spring Nut CRT-233: the small detail that makes a difference on track

In slot preparation, the smallest components are often the most critical. The Black Arrow Spring Nut from Cumbre Racing Technologies (reference CRT-233) is one of those elements that, when properly adjusted, ensure that the mechanical assembly works with precision and without unwanted play. This pack includes 8 units, designed so you always have spares on hand in the workshop or in your race bag.

Function and performance

The spring nut's mission is to secure and regulate the tension of the spring in the suspension or guide assembly of the slot car. Proper tightening directly influences the stability of the guide on the track, the vehicle's response in corners, and the consistency of lap times. Replacing a worn or lost nut is a quick task that can restore optimal behaviour to the car.

Compatibility

This nut is specifically designed for cars in the Black Arrow range. If you have doubts about whether it fits your specific model, consult the reference with your preparer or check the technical documentation of the car before proceeding with the installation.

Installation and preparation

• Before installation, check the condition of the spring and the housing to rule out wear on other components of the assembly.
• Tighten with the appropriate tool: excessive tightening can compromise the flexibility of the system; insufficient tightening generates unwanted play.
• Always carry a spare unit in your race kit: they are small parts and easy to lose during maintenance.

Ideal for…

Club drivers and competitors who use cars from the Black Arrow range and want to keep their equipment in perfect condition. It is also a good stock item for preparers managing multiple vehicles from this brand.

Frequently asked questions

How many nuts are included in the pack?

The CRT-233 pack includes 8 units of the Black Arrow Spring Nut.

What exactly does the spring nut do in a slot car?

It serves to secure and regulate the tension of the spring in the suspension or guide system of the car. Proper adjustment improves stability and response in corners.

Is it compatible with other cars that are not Black Arrow?

It is specifically designed for the Black Arrow range. We cannot confirm compatibility with other brands without prior verification.

How often should I check or replace these nuts?

It depends on usage and racing conditions. It is advisable to check them at each maintenance session and replace them if they show deformation, play, or signs of wear.

The Cumbre Racing Technologies CRT-233 Black Arrow Spring Nut is a precision replacement part designed for Black Arrow slot cars, sold in a pack of 8 units. Essential for keeping your spring assembly correctly tensioned and your car performing consistently on track. A must-have spare for club racers and slot car enthusiasts who demand reliable setups at every race session.

Information not found

It has not been possible to reliably verify the exact measurements (thread diameter, pitch) or the complete list of Black Arrow car references compatible with this nut. If you need this information, we recommend consulting it directly with the manufacturer or with our team.