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Size of Grub Screw  

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Tyrilean
(@tyrilean)
New Member
Size of Grub Screw

I just received my upgrade from single tool to multi tool, and found that one of the pre-assembled nextruders is missing the grub screw that holds the nozzle in place. I found out from chat that the size is m4x8, but they couldn't give me thread depth. They're shipping one out, but since it's coming from Prague all the way to the US, it's going to take a week, and I'd like to not wait that time.

Anyone know the thread depth on this part? Anyone have a successful amazon listing they were able to use to replace this part? 

Thanks in advance for your help.

Best Answer by JoanTabb:

M4 is a standard metric thread 

https://www.machiningdoctor.com/threadinfo/?tid=1011
for the nozzle I expect you need flat pointed screws not sharp pointed screws
https://www.amazon.co.uk/Screws-Stainless-Metric-Thread-Socket/dp/B0BDG291C3/ref=sr_1_6?sr=8-6

regards Joan

Posted : 24/03/2025 6:57 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Size of Grub Screw

M4 is a standard metric thread 

https://www.machiningdoctor.com/threadinfo/?tid=1011
for the nozzle I expect you need flat pointed screws not sharp pointed screws
https://www.amazon.co.uk/Screws-Stainless-Metric-Thread-Socket/dp/B0BDG291C3/ref=sr_1_6?sr=8-6

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 24/03/2025 7:52 pm
Tyrilean liked
Tyrilean
(@tyrilean)
New Member
Topic starter answered:
RE: Size of Grub Screw

Awesome, thanks.

Posted : 24/03/2025 8:23 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Size of Grub Screw

You're welcome.

Joan 

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 25/03/2025 1:28 pm
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