M18 Nut cover Grey

Plastic hexagonal nut cap for M6 to M30 screws

This round wrap-around nut cover in black, white or grey is ideal for protecting nuts and hexagonal screw heads. The range of plastic wrap-around nut covers we offer consists of a large number of dimensions from M6 to M30. This nut cover provides a perfect finish and effectively protects against injury, moisture, corrosion as well as impacts or scratches on floors or walls.

Compatibility with hex nuts from M6 to M30

To select the nut cover in the right size, measure the width across flats of the nut, marked S1 on the diagram below.

For example, if your nut has a 26/27mm S1 dimension, select an M18.

nut cover.

Round Nut Cover Cap: Protection and Professional Finish

Optimise the lifespan of your installations with our range of round nut cover caps. Designed to fit perfectly onto hexagon nuts and bolt heads, these protective caps are the essential accessory to combine aesthetics and technical safety.

Our protective caps are manufactured in high-resistance plastic, offering a durable solution to conceal and insulate your fasteners. Available in black, white or grey, they integrate discreetly into all your projects, whether industrial, furniture or construction.

• Wide choice of dimensions: A complete range from M6 to M30 to cover all your needs.

• Multi-purpose protection: Effective barrier against moisture, corrosion and chemical attack.

• Enhanced safety: Covers protruding parts to prevent the risk of injury and cuts.

• Surface protection: Prevents scratches and impacts on floors and walls during handling. 

Quality: this wrap-around nut cover cap for M6 to M30 nuts is of professional quality. Particularly due to the precision of its design, the quality of the raw materials used, as well as the consistency of its dimensions thanks to regular quality controls in the factory.

Installation: installation is quick by fully inserting the nut cover over the end of the nut to be covered. Insertion is done by hand and no special tools are required. Its resistant material and its precise dimensions ensure a perfect fit. It is neither necessary nor recommended to glue the cap to the tube. This will allow you to replace it much more easily if needed, without damaging the tube. However, it is recommended to apply a small amount of multi-purpose grease inside the nut cover before inserting it onto the nut or bolt head. This will significantly reduce the risk of corrosion and moisture ingress.

Taking correct measurements: this is a key step in selecting an insert or cap. Measurements should be taken on the external dimensions of the nut head onto which the nut cover will be fitted. Accurate measuring will ensure that the wrap-around nut cover fits easily and remains securely in place throughout its use.

For M6 to M30 hexagonal nuts in stock

Frequently Asked Questions

How do I choose the size of my nut cover?

The size of the nut cover corresponds to the thread diameter of your screw or bolt (metric standard). For example, if you have an M8 screw, you should choose an M8 model. The cap is designed to fit automatically onto the standard dimension of the corresponding hexagonal head.

Are the nut covers weather-resistant?

Yes. Made of high-density plastic (often polyethylene or polypropylene), our nut covers are rot-proof. They provide excellent protection against rain, moisture and UV rays, preventing premature rusting of your fasteners.

Is it easy to remove the nut cover once installed?

The cover is designed to hold firmly by pressure so that it does not fall off due to vibrations. However, it can still be removed using a flat-head screwdriver or fine pliers if you need to access the screw for maintenance.

What are the advantages of black compared to white or grey?

• Black: Ideal for outdoor use, it hides dirt better and generally offers the best UV resistance.

• White: Perfect for interior design, sanitary facilities or kitchen furniture.

• Grey: Widely used on galvanised steel structures or aluminium for a tone-on-tone finish.

Is the plastic shock-resistant?

Yes, the material used has a degree of flexibility that allows it to absorb light impacts without cracking, thus protecting the integrity of the screw head.