Model Engine Maker
Supporting => Tooling & Machines => Topic started by: Tjark on February 08, 2019, 12:59:32 PM
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I have bought a ¼ x 32 spark plug and tap for the treading.
Now I wonder witch drill I have to use for the tread hole.
I have surged on the net but I can’t find this information.
Tjark.
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5.7mm will do you for UNEF
https://www.gewinde-normen.de/en/unified-extra-fine-thread.html
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Jason, thanks for the information.
Also thanks for the list, I never heard of UNEF tread.
Tjark.
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A 1/4 - 32 thread is usually (for a 70% thread) 1/4" - 1/32" or 7/32" :-) Just like all the "Metricanized" folks do. :-)
...lew...
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Jason, thanks for the information.
Also thanks for the list, I never heard of UNEF tread.
Tjark.
Get ye a machinery handbook. 8)
https://www.amazon.com/s?k=Machinery+Handbook&ref=nb_sb_noss_2
Otherwise known as the "Good book" If you're going to do this stuff, it's really a need to have, as it's got so much information in it.
Unified National Extra Fine. by the way
Dave