Bambu Lab Hotend 0.4mm Hardened Steel Nozzle for A1 and A1 Mini

The Bambu Lab Hotend 0.4 mm is the official hardened steel replacement hotend for the Bambu Lab A1 Mini and Bambu Lab A1 3D printers. Built to withstand abrasive composite filaments, this bambu lab hotend 0.4 mm upgrade is the ideal choice for users who demand durability, precision, and consistent extrusion from their A1 series printer.

Why Choose the Bambu Lab Hotend 0.4 mm?

The 0.4 mm nozzle is the most versatile standard size — perfect for everyday PLA, PETG, ABS, and carbon fibre-filled filament prints. It delivers the best balance of detail and speed, making it the go-to choice for most users. Equipped with a hardened steel construction, the bambu lab hotend 0.4 mm hotend outlasts standard brass nozzles — especially when printing with abrasive materials like carbon fibre (CF), glass-filled filaments, or high-temperature polymers such as ABS and Nylon.

• 0.4 mm Nozzle: The universal standard size — perfect for everyday printing with PLA, PETG, ABS, and carbon-fibre filaments.
• Hardened Steel Construction — Wear-resistant against carbon fibre, glass-filled, and abrasive composite filaments that destroy brass nozzles.
• High-Temperature Rated to 300°C — Supports engineering-grade materials including ABS, Nylon, ASA, PETG-CF, and PLA-CF.
• AMS Compatible — Works seamlessly with the Bambu Lab Automatic Material System for multi-material printing.
• Easy Drop-In Replacement — OEM part designed to install in minutes on A1 and A1 Mini with no additional tools.
• 1 Year Warranty — Backed by KSP Electronics with full after-sales support across India.

Ideal for a wide range of prints from functional prototypes to detailed models — the most popular nozzle size worldwide.

0.2mm Nozzle – Optimal Print Fineness

• Smaller diameter extrudes thin filaments
• High resolution on the horizontal print surface

0.6mm and 0.8mm Nozzle – Faster Print Speed

• Larger diameter extrudes more filaments per second, resulting in faster print speed

Comparison of Different Nozzle Sizes

*The final display of “Model Strength” & “Model Fineness” depends on the results of the material testing.

Filament Compatibility

[*Note]

*① Filaments with carbon fiber, glass fiber, metal, or other inorganic particles are prone to clog a 0.2 mm nozzle.
*② Bambu PLA-CF and Bambu PETG-CF have been extensively tested and proven to have a low risk of clogging when printed with a hardened steel 0.4 mm nozzle, while also achieving higher print quality.
*③ For general carbon fiber or glass fiber filaments such as Bambu PAHT-CF and PET-CF, it is recommended to use a hardened steel 0.6 mm nozzle to minimize the risk of clogging and abrasion.

Learn more about filament compatibility on Bambu Lab Wiki.

Learn more about replacing the hotend with nozzle on Bambu Lab Wiki.

In the Box

• Hotend with Nozzle

Compatibility

Bambu Lab A1 and Bambu Lab A1 Mini 3D Printers

Product Specifications

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Also available: Bambu Lab Hotend 0.2 mm | Bambu Lab Hotend 0.6 mm | Bambu Lab Hotend 0.8 mm

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