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Home / Office Equipment, Supplies & Services / 3D Printer Nozzle MK8 Hardened Steel M7 High-Temperature Corrosion Resistant

Attributes

Brand -
Category Root / Office Equipment, Supplies & Services
Origin -
Material Hardened Steel
Thread Type M7
Nozzle Standard MK8
Compatible Filament PLA, ABS, PETG, Carbon Fiber, Wood Fill
Maximum Temperature 450°C (842°F)
Orifice Diameter Options 0.4mm, 0.6mm, 0.8mm
Surface Finish Polished Internal Channel
Corrosion Resistance High (Suitable for abrasive materials)
Package Contents 5x Nozzles, 1x Cleaning Needle, 1x Wrench
Country of Origin Switzerland Design / Manufactured in Asia

6 reviews

A

Anonymous

Mar 24, 2026

Rating: 5/5

Consistent flow rate

The internal polish on these nozzles is impressive. I noticed immediately that my retraction settings needed slight adjustment because the flow is so much smoother compared to my old nozzles. No more clogs even at high speeds.

A

Anonymous

Mar 19, 2026

Rating: 4/5

Great durability, slightly harder to install

The build quality is excellent and the M7 thread fits my Ender 3 perfectly after a quick adapter check. The only reason for 4 stars is that because it's hardened steel, you need to be careful not to overtighten it when the hotend is cold, or you might strip the threads. Once installed correctly, it works flawlessly.

A

Anonymous

Mar 16, 2026

Rating: 5/5

Survived a cold pull test

I accidentally crashed my nozzle into the bed, which usually bends brass tips instantly. This hardened steel nozzle didn't even scratch. It saved my entire hotend assembly. Worth every penny for the peace of mind alone.

A

Anonymous

Mar 14, 2026

Rating: 3/5

Good product, confusing kit contents

The nozzles themselves are fantastic quality. However, the kit came with a wrench that felt a bit flimsy for the torque required. I ended up using my own tool. If you are a beginner, make sure you have proper tools before attempting installation.

A

Anonymous

Mar 07, 2026

Rating: 5/5

Perfect for abrasive filaments

I switched to these hardened steel nozzles specifically for printing with carbon fiber filled PLA. My standard brass nozzles would wear out after just two spools, but these have lasted through ten without any change in extrusion quality. Highly recommended for serious hobbyists.

A

Anonymous

Mar 01, 2026

Rating: 5/5

Best upgrade for the price

If you print anything other than basic PLA, you need these. The corrosion resistance is real; I've printed with some acidic wood-fill filaments and there is zero degradation. Will definitely buy again when I eventually need replacements years from now.

5 FAQ

Q: Do I need to change my slicer settings when switching to hardened steel?

A: Generally, you may need to increase your printing temperature by 5-10°C because steel conducts heat differently than brass. You might also need to tweak retraction settings slightly due to the smoother internal finish. We recommend running a temperature tower test first.

Q: What is the difference between M6 and M7 threads?

A: M6 and M7 refer to the metric thread diameter of the nozzle. M7 is slightly larger (7mm) compared to M6 (6mm). They are not interchangeable without an adapter. Please check your hotend manufacturer specifications before purchasing.

Q: Can I use these nozzles with Nylon filament?

A: Absolutely. Hardened steel nozzles are ideal for Nylon and other high-temperature engineering filaments because they withstand the heat and abrasion better than brass or stainless steel alternatives.

Q: Are these nozzles compatible with the Creality Ender 3 V2?

A: Yes, the Ender 3 V2 uses an MK8 style hotend. However, please verify your specific heater block requires an M7 thread, as most stock Ender 3s do. If your printer uses M6, you will need an adapter or a different model.

Q: How many nozzles are included in this DIY kit?

A: This specific kit includes 5 individual nozzles of the same size choice (0.4mm, 0.6mm, or 0.8mm), along with a cleaning needle and a small installation wrench.

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