0.3mm / 1.75mm MK8 3D Printer Extruder Hotend Nozzle

0.3mm / 1.75mm MK8 3D Printer Extruder Hotend Nozzle is a high-precision replacement component engineered to enhance the print quality and detail of your fused deposition modeling (FDM) machine. This MK8 nozzle features a 0.3mm orifice designed specifically for 1.75mm filament, allowing for much finer layer heights and more intricate geometries than standard larger nozzles. Consequently, it provides the ideal solution for hobbyists and professionals who print miniature models or complex mechanical parts. Furthermore, the smooth internal walls reduce backpressure and minimize the risk of filament clogging during long print sessions. Therefore, upgrading to this precision-machined brass nozzle ensures that your 3D printer maintains consistent extrusion and superior surface finish across various thermoplastic materials.

Key Features:

• High-Precision Orifice: The 0.3mm output diameter enables high-resolution printing, making it perfect for small-scale projects and fine text.
• Premium Brass Construction: Machined from high-quality brass, this nozzle offers excellent thermal conductivity for uniform heating and stable extrusion temperatures.
• Reduced Clogging: A polished internal surface facilitates smooth filament flow, however, users should ensure their filament is free of impurities to maximize longevity.
• Standard MK8 Compatibility: This nozzle follows the universal MK8 geometry, ensuring a seamless fit for a wide range of popular desktop 3D printers.
• Clear Identification: The exterior typically features engraved size markings, so you can quickly identify the nozzle diameter during maintenance.

Technical Specifications:

• Output Diameter: 0.3 mm
• Input Filament Diameter: 1.75 mm
• Thread Type: M6 Metric Thread
• Maximum Operating Temperature: ≈ 300°C (Depends on heat block and thermistor limits)
• Material: International Standard Brass
• Compatible Materials: PLA, ABS, PETG, TPU, and Wood-filled filaments

Mechanical Specifications:

• Hardness: 3.0 Mohs
• Manufacturing Process: High-precision CNC turning and boring
• Surface Finish: Ra < 0.4 μm (Internal)
• Installation Torque: Max 5.0 N·m (Should be tightened while the hotend is heated)

Dimensions:

• Total Length: 13 mm
• Thread Length: 5 mm
• Hexagon Diameter: 7 mm
• Weight: ≈ 2.0 g

Pinout and Wiring:

• Installation Method: Threaded M6 connection; no electrical wiring is required for this mechanical component.
• Maintenance Note: Always preheat your hotend to at least 200°C before attempting to remove or install a nozzle.
• Sealing: Ensure the nozzle is tightened firmly against the heat break (throat) to prevent plastic leakage from the heater block threads.

Datasheet Reference:

• Download MK8 Nozzle Mechanical Drawing and Datasheet

Commonly Used in:

• Creality Ender Series: Widely used in the Ender 3, Ender 3 Pro, Ender 3 V2, and Ender 5 models.
• Prusa i3 Clones: Compatible with various MK8-style extruders found on Anet A8 and Geetech printers.
• Custom DIY Extruders: A staple component for RepRap builders using M6 threaded heater blocks.

Applications:

• Miniature Printing: Creating small figurines or tabletop gaming pieces with high surface detail.
• Prototyping: Producing functional prototypes where dimensional accuracy and fine features are critical.
• High-Resolution Art: Generating artistic 3D prints that require nearly invisible layer lines.

Equivalent Models:

• Micro Swiss MK8 Nozzle: A premium wear-resistant alternative, although usually at a significantly higher price point.
• E3D V6 Nozzle: Offers similar diameters, however, it uses a different overall length and may require Z-offset adjustment.
• Standard 0.4mm MK8: The common default nozzle, whereas this 0.3mm version provides superior detail at the cost of slower print times.

Package Includes:

• 1 x 0.3mm / 1.75mm MK8 3D Printer Extruder Hotend Nozzle