Harder & Steenbeck 0.45 mm Replacement Nozzle with Seal — 2024 Series Fit, Balanced Detail & Coverage

Harder & Steenbeck 2024 0.45 mm nozzle with seal (part 702384) is a direct-fit replacement nozzle designed to restore precise paint control and leak-free performance for compatible H&S airbrushes.

This spare nozzle is engineered to match the 2024-series tolerances while remaining backward-compatible with many earlier Harder & Steenbeck models. Made for hobbyists, model makers, and professional airbrush users, the 0.45 mm orifice size balances fine detail and medium-area coverage. The included sealing ring helps prevent blowback and maintains steady atomization for consistent spray patterns when paired with the correct needle and cap.

Which airbrush models will this nozzle fit?

The 702384 nozzle is built to fit current 2024 Ultra and Evolution bodies and a broad range of prior H&S systems. Check your model against this compatibility snapshot to confirm a match before ordering.

• Ultra 2024 and Evolution 2024 — direct-fit replacement.
• Giraldez Infinity and Kyiv Infinity — compatible designs noted for Infinity series.
• Ultra 2006–2023, Evolution 1998–2023, and Infinity 2007–2023 — compatible across many past variants.

How does a 0.45 mm nozzle affect spray performance?

A 0.45 mm orifice offers a middle ground between ultra-fine and broad nozzles, letting you handle both detail work and faster coverage without switching tools constantly. It’s well suited for thin to moderately viscous paints when thinned appropriately.

• Delivers balanced atomization for crisp edges and controlled fills.
• Works well with acrylics, lacquers, and typical model paints when thinned.
• Reduces clog risk compared with smaller micron nozzles when using slightly heavier mixes.

What does the included seal do and why is it important?

The seal (O-ring) that comes with the nozzle improves the air- and fluid-tight fit between nozzle and airbrush body. A good seal prevents paint blowback, preserves nozzle alignment, and supports consistent pressure response at the trigger.

• Stops paint from leaking into the air channel and creating spray inconsistencies.
• Helps maintain repeatable atomization and reduces maintenance frequency.
• Eases installation by centering the nozzle during assembly.

Who is this for? This replacement nozzle and seal suit dedicated airbrush users who need a reliable spare or an upgrade part for maintaining peak performance. Ideal for hobby painters, customizers, and professionals using Harder & Steenbeck Ultra, Evolution, Infinity, or compatible models who want a medium-sized nozzle that balances fine control and efficient coverage.