GHAD nozzle 0.35mm

The GA-40379 0.35mm Nozzle: The Heart of the Gaahleri GHAD Airbrush

The GHAD (Giraldez Hybrid Airbrush Design) airbrush, developed by Gaahleri in collaboration with renowned artist Ángel Giraldez, is a reference tool among modellers and miniature painters. Keeping it in perfect condition largely depends on the nozzle being in optimal state, and this original replacement —reference GA-40379— is the part that ensures the spray system functions as designed.

Function and Performance

With a diameter of 0.35mm, this nozzle occupies the sweet spot of airbrushing: wide enough to cover surfaces with uniform base coats and project finishing varnishes, yet precise enough to work on soft gradients and shading effects on figures, static models, dioramas, and diecast model bodies. The airtight fit between the nozzle and needle is critical to avoid splattering —that annoying dripping that ruins a piece at the last moment— and the original replacement from Gaahleri ensures exactly that fit.

A constant paint flow is not just a convenience: when working with technical paints from brands like Vallejo, Kaleido, or Tamiya, or with glossy finishing varnishes on collectible models, any variation in the spray is immediately noticeable in the final result. The precision manufacturing of this nozzle minimizes those variations.

Compatibility

This nozzle is specific to the Gaahleri GHAD airbrush. It is not a generic component: it is designed and toleranced to fit the body and needle of the GHAD, so its use in other airbrush models is not recommended even if the nominal diameter matches.

Assembly and Maintenance

Replacing the nozzle is one of the most common maintenance operations in a heavily used airbrush. Abrasive wear from certain paints with coarse pigments, or inadequate cleaning, can cause micro-deformations in the hole that directly affect the quality of the spray. Having a spare on hand —especially before an important painting session— is a recommended practice for any serious modeller.

• Always clean the nozzle with compatible thinner before removing it.
• Use the specific GHAD wrench for disassembly: this will prevent damage to the airbrush body.
• Check the condition of the needle each time you change the nozzle; a bent needle will deteriorate the new component in a few sessions.
• Store the spare in its original packaging until you are ready to use it to protect the hole.

Main Applications

• Uniform base coats on slot car bodies, modelling figures, and static models.
• Glossy, satin, or matte finishing varnishes on diecast models and high-end collectibles.
• Gradients and colour transitions on figures and dioramas.
• Shading effects with very diluted paint at low pressures.

Frequently Asked Questions

Is this nozzle compatible with other 0.35mm airbrushes that are not the GHAD?

No. The GA-40379 reference is specifically designed for the Gaahleri GHAD airbrush. Although the nominal diameter of 0.35mm may match other models on the market, the fit tolerances are specific to the GHAD. Installing it on another body would compromise the sealing and paint flow.

How often should the nozzle of an airbrush be changed?

It depends on usage and the type of paint used. Paints with abrasive pigments or varnishes with strong solvents accelerate wear. If you notice that the stroke becomes irregular, splattering occurs for no apparent reason, or cleaning no longer restores the flow, it is time to replace it.

Can I use acrylic-based paints with this nozzle?

Yes. A diameter of 0.35mm is perfectly suitable for modelling acrylic paints such as those from Vallejo, Kaleido, or Tamiya, as long as they are properly diluted. For particularly dense paints or enamels, consult the manufacturer's dilution recommendations.

Do I need special tools to install this nozzle?

It is recommended to use the specific GHAD nozzle wrench to avoid forcing the airbrush body. Tightening or loosening the nozzle by hand or with inappropriate tools can damage both the new nozzle and the airbrush body.

Does it come with any accessories or is it just the nozzle?

The GA-40379 reference corresponds solely to the replacement nozzle. If you need other components of the GHAD —needle, nozzle cap, etc.— you will need to purchase them separately.

The Gaahleri GA-40379 is a 0.35mm replacement nozzle designed exclusively for the GHAD (Giraldez Hybrid Airbrush Design) airbrush. Built to precise tolerances, it ensures a consistent paint flow and a perfect seal, making it the go-to spare part for modellers, miniature painters and scale model enthusiasts who rely on the GHAD for basecoating, varnishing and smooth blending on slot car bodies, diecast models, dioramas and static kits.