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thread size for nema mount

Posted: Sat Feb 23, 2013 11:34 pm
by Vampaerus
What is the thread size for the nema mount at the top of the z-axis assy? One of the screws won't thread, it seems the large screw that holds the top to the back has interfered with the tapped hole. Stripped the screw trying to mount a motor. Gonna have to chase that hole. Smallest tap I have is 1/4-28 and it's clearly smaller than that. What is the thread spec for this hole? I'd like to just buy the one tap I need.

Re: thread size for nema mount

Posted: Mon Feb 25, 2013 1:20 pm
by AJ Quick
They are #10-24.

You may just need to debur the hole to allow it to get started.

Re: thread size for nema mount

Posted: Wed Oct 29, 2014 5:52 am
by sofiajoe
I am having difficulties starting the lead screws. Any suggestions?